library/sha4.c - security/mbedtls - Rivoreo Source Code Repositories

 /*
  *  FIPS-180-2 compliant SHA-384/512 implementation
  *
  *  Copyright (C) 2006-2009, Paul Bakker <polarssl_maintainer at polarssl.org>
  *  All rights reserved.
  *
  *  Joined copyright on original XySSL code with: Christophe Devine
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation; either version 2 of the License, or
  *  (at your option) any later version.
  *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License along
  *  with this program; if not, write to the Free Software Foundation, Inc.,
  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 /*
  *  The SHA-512 Secure Hash Standard was published by NIST in 2002.
  *
  *  http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf
  */

 #include "polarssl/config.h"

 #if defined(POLARSSL_SHA4_C)

 #include "polarssl/sha4.h"

 #include <string.h>
 #include <stdio.h>

 /*
  * 64-bit integer manipulation macros (big endian)
  */
 #ifndef GET_UINT64_BE
 #define GET_UINT64_BE(n,b,i)                            \
 {                                                       \
     (n) = ( (unsigned int64) (b)[(i)    ] << 56 )       \
         | ( (unsigned int64) (b)[(i) + 1] << 48 )       \
         | ( (unsigned int64) (b)[(i) + 2] << 40 )       \
         | ( (unsigned int64) (b)[(i) + 3] << 32 )       \
         | ( (unsigned int64) (b)[(i) + 4] << 24 )       \
         | ( (unsigned int64) (b)[(i) + 5] << 16 )       \
         | ( (unsigned int64) (b)[(i) + 6] <<  8 )       \
         | ( (unsigned int64) (b)[(i) + 7]       );      \
 }
 #endif

 #ifndef PUT_UINT64_BE
 #define PUT_UINT64_BE(n,b,i)                            \
 {                                                       \
     (b)[(i)    ] = (unsigned char) ( (n) >> 56 );       \
     (b)[(i) + 1] = (unsigned char) ( (n) >> 48 );       \
     (b)[(i) + 2] = (unsigned char) ( (n) >> 40 );       \
     (b)[(i) + 3] = (unsigned char) ( (n) >> 32 );       \
     (b)[(i) + 4] = (unsigned char) ( (n) >> 24 );       \
     (b)[(i) + 5] = (unsigned char) ( (n) >> 16 );       \
     (b)[(i) + 6] = (unsigned char) ( (n) >>  8 );       \
     (b)[(i) + 7] = (unsigned char) ( (n)       );       \
 }
 #endif

 /*
  * Round constants
  */
 static const unsigned int64 K[80] =
 {
     UL64(0x428A2F98D728AE22),  UL64(0x7137449123EF65CD),
     UL64(0xB5C0FBCFEC4D3B2F),  UL64(0xE9B5DBA58189DBBC),
     UL64(0x3956C25BF348B538),  UL64(0x59F111F1B605D019),
     UL64(0x923F82A4AF194F9B),  UL64(0xAB1C5ED5DA6D8118),
     UL64(0xD807AA98A3030242),  UL64(0x12835B0145706FBE),
     UL64(0x243185BE4EE4B28C),  UL64(0x550C7DC3D5FFB4E2),
     UL64(0x72BE5D74F27B896F),  UL64(0x80DEB1FE3B1696B1),
     UL64(0x9BDC06A725C71235),  UL64(0xC19BF174CF692694),
     UL64(0xE49B69C19EF14AD2),  UL64(0xEFBE4786384F25E3),
     UL64(0x0FC19DC68B8CD5B5),  UL64(0x240CA1CC77AC9C65),
     UL64(0x2DE92C6F592B0275),  UL64(0x4A7484AA6EA6E483),
     UL64(0x5CB0A9DCBD41FBD4),  UL64(0x76F988DA831153B5),
     UL64(0x983E5152EE66DFAB),  UL64(0xA831C66D2DB43210),
     UL64(0xB00327C898FB213F),  UL64(0xBF597FC7BEEF0EE4),
     UL64(0xC6E00BF33DA88FC2),  UL64(0xD5A79147930AA725),
     UL64(0x06CA6351E003826F),  UL64(0x142929670A0E6E70),
     UL64(0x27B70A8546D22FFC),  UL64(0x2E1B21385C26C926),
     UL64(0x4D2C6DFC5AC42AED),  UL64(0x53380D139D95B3DF),
     UL64(0x650A73548BAF63DE),  UL64(0x766A0ABB3C77B2A8),
     UL64(0x81C2C92E47EDAEE6),  UL64(0x92722C851482353B),
     UL64(0xA2BFE8A14CF10364),  UL64(0xA81A664BBC423001),
     UL64(0xC24B8B70D0F89791),  UL64(0xC76C51A30654BE30),
     UL64(0xD192E819D6EF5218),  UL64(0xD69906245565A910),
     UL64(0xF40E35855771202A),  UL64(0x106AA07032BBD1B8),
     UL64(0x19A4C116B8D2D0C8),  UL64(0x1E376C085141AB53),
     UL64(0x2748774CDF8EEB99),  UL64(0x34B0BCB5E19B48A8),
     UL64(0x391C0CB3C5C95A63),  UL64(0x4ED8AA4AE3418ACB),
     UL64(0x5B9CCA4F7763E373),  UL64(0x682E6FF3D6B2B8A3),
     UL64(0x748F82EE5DEFB2FC),  UL64(0x78A5636F43172F60),
     UL64(0x84C87814A1F0AB72),  UL64(0x8CC702081A6439EC),
     UL64(0x90BEFFFA23631E28),  UL64(0xA4506CEBDE82BDE9),
     UL64(0xBEF9A3F7B2C67915),  UL64(0xC67178F2E372532B),
     UL64(0xCA273ECEEA26619C),  UL64(0xD186B8C721C0C207),
     UL64(0xEADA7DD6CDE0EB1E),  UL64(0xF57D4F7FEE6ED178),
     UL64(0x06F067AA72176FBA),  UL64(0x0A637DC5A2C898A6),
     UL64(0x113F9804BEF90DAE),  UL64(0x1B710B35131C471B),
     UL64(0x28DB77F523047D84),  UL64(0x32CAAB7B40C72493),
     UL64(0x3C9EBE0A15C9BEBC),  UL64(0x431D67C49C100D4C),
     UL64(0x4CC5D4BECB3E42B6),  UL64(0x597F299CFC657E2A),
     UL64(0x5FCB6FAB3AD6FAEC),  UL64(0x6C44198C4A475817)
 };

 /*
  * SHA-512 context setup
  */
 void sha4_starts( sha4_context *ctx, int is384 )
 {
     ctx->total[0] = 0;
     ctx->total[1] = 0;

     if( is384 == 0 )
     {
         /* SHA-512 */
         ctx->state[0] = UL64(0x6A09E667F3BCC908);
         ctx->state[1] = UL64(0xBB67AE8584CAA73B);
         ctx->state[2] = UL64(0x3C6EF372FE94F82B);
         ctx->state[3] = UL64(0xA54FF53A5F1D36F1);
         ctx->state[4] = UL64(0x510E527FADE682D1);
         ctx->state[5] = UL64(0x9B05688C2B3E6C1F);
         ctx->state[6] = UL64(0x1F83D9ABFB41BD6B);
         ctx->state[7] = UL64(0x5BE0CD19137E2179);
     }
     else
     {
         /* SHA-384 */
         ctx->state[0] = UL64(0xCBBB9D5DC1059ED8);
         ctx->state[1] = UL64(0x629A292A367CD507);
         ctx->state[2] = UL64(0x9159015A3070DD17);
         ctx->state[3] = UL64(0x152FECD8F70E5939);
         ctx->state[4] = UL64(0x67332667FFC00B31);
         ctx->state[5] = UL64(0x8EB44A8768581511);
         ctx->state[6] = UL64(0xDB0C2E0D64F98FA7);
         ctx->state[7] = UL64(0x47B5481DBEFA4FA4);
     }

     ctx->is384 = is384;
 }

 static void sha4_process( sha4_context *ctx, unsigned char data[128] )
 {
     int i;
     unsigned int64 temp1, temp2, W[80];
     unsigned int64 A, B, C, D, E, F, G, H;

 #define  SHR(x,n) (x >> n)
 #define ROTR(x,n) (SHR(x,n) | (x << (64 - n)))

 #define S0(x) (ROTR(x, 1) ^ ROTR(x, 8) ^  SHR(x, 7))
 #define S1(x) (ROTR(x,19) ^ ROTR(x,61) ^  SHR(x, 6))

 #define S2(x) (ROTR(x,28) ^ ROTR(x,34) ^ ROTR(x,39))
 #define S3(x) (ROTR(x,14) ^ ROTR(x,18) ^ ROTR(x,41))

 #define F0(x,y,z) ((x & y) | (z & (x | y)))
 #define F1(x,y,z) (z ^ (x & (y ^ z)))

 #define P(a,b,c,d,e,f,g,h,x,K)                  \
 {                                               \
     temp1 = h + S3(e) + F1(e,f,g) + K + x;      \
     temp2 = S2(a) + F0(a,b,c);                  \
     d += temp1; h = temp1 + temp2;              \
 }

     for( i = 0; i < 16; i++ )
     {
         GET_UINT64_BE( W[i], data, i << 3 );
     }

     for( ; i < 80; i++ )
     {
         W[i] = S1(W[i -  2]) + W[i -  7] +
                S0(W[i - 15]) + W[i - 16];
     }

     A = ctx->state[0];
     B = ctx->state[1];
     C = ctx->state[2];
     D = ctx->state[3];
     E = ctx->state[4];
     F = ctx->state[5];
     G = ctx->state[6];
     H = ctx->state[7];
     i = 0;

     do
     {
         P( A, B, C, D, E, F, G, H, W[i], K[i] ); i++;
         P( H, A, B, C, D, E, F, G, W[i], K[i] ); i++;
         P( G, H, A, B, C, D, E, F, W[i], K[i] ); i++;
         P( F, G, H, A, B, C, D, E, W[i], K[i] ); i++;
         P( E, F, G, H, A, B, C, D, W[i], K[i] ); i++;
         P( D, E, F, G, H, A, B, C, W[i], K[i] ); i++;
         P( C, D, E, F, G, H, A, B, W[i], K[i] ); i++;
         P( B, C, D, E, F, G, H, A, W[i], K[i] ); i++;
     }
     while( i < 80 );

     ctx->state[0] += A;
     ctx->state[1] += B;
     ctx->state[2] += C;
     ctx->state[3] += D;
     ctx->state[4] += E;
     ctx->state[5] += F;
     ctx->state[6] += G;
     ctx->state[7] += H;
 }

 /*
  * SHA-512 process buffer
  */
 void sha4_update( sha4_context *ctx, unsigned char *input, int ilen )
 {
     int fill;
     unsigned int64 left;

     if( ilen <= 0 )
         return;

     left = ctx->total[0] & 0x7F;
     fill = (int)( 128 - left );

     ctx->total[0] += ilen;

     if( ctx->total[0] < (unsigned int64) ilen )
         ctx->total[1]++;

     if( left && ilen >= fill )
     {
         memcpy( (void *) (ctx->buffer + left),
                 (void *) input, fill );
         sha4_process( ctx, ctx->buffer );
         input += fill;
         ilen  -= fill;
         left = 0;
     }

     while( ilen >= 128 )
     {
         sha4_process( ctx, input );
         input += 128;
         ilen  -= 128;
     }

     if( ilen > 0 )
     {
         memcpy( (void *) (ctx->buffer + left),
                 (void *) input, ilen );
     }
 }

 static const unsigned char sha4_padding[128] =
 {
  0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 };

 /*
  * SHA-512 final digest
  */
 void sha4_finish( sha4_context *ctx, unsigned char output[64] )
 {
     int last, padn;
     unsigned int64 high, low;
     unsigned char msglen[16];

     high = ( ctx->total[0] >> 61 )
          | ( ctx->total[1] <<  3 );
     low  = ( ctx->total[0] <<  3 );

     PUT_UINT64_BE( high, msglen, 0 );
     PUT_UINT64_BE( low,  msglen, 8 );

     last = (int)( ctx->total[0] & 0x7F );
     padn = ( last < 112 ) ? ( 112 - last ) : ( 240 - last );

     sha4_update( ctx, (unsigned char *) sha4_padding, padn );
     sha4_update( ctx, msglen, 16 );

     PUT_UINT64_BE( ctx->state[0], output,  0 );
     PUT_UINT64_BE( ctx->state[1], output,  8 );
     PUT_UINT64_BE( ctx->state[2], output, 16 );
     PUT_UINT64_BE( ctx->state[3], output, 24 );
     PUT_UINT64_BE( ctx->state[4], output, 32 );
     PUT_UINT64_BE( ctx->state[5], output, 40 );

     if( ctx->is384 == 0 )
     {
         PUT_UINT64_BE( ctx->state[6], output, 48 );
         PUT_UINT64_BE( ctx->state[7], output, 56 );
     }
 }

 /*
  * output = SHA-512( input buffer )
  */
 void sha4( unsigned char *input, int ilen,
            unsigned char output[64], int is384 )
 {
     sha4_context ctx;

     sha4_starts( &ctx, is384 );
     sha4_update( &ctx, input, ilen );
     sha4_finish( &ctx, output );

     memset( &ctx, 0, sizeof( sha4_context ) );
 }

 /*
  * output = SHA-512( file contents )
  */
 int sha4_file( char *path, unsigned char output[64], int is384 )
 {
     FILE *f;
     size_t n;
     sha4_context ctx;
     unsigned char buf[1024];

     if( ( f = fopen( path, "rb" ) ) == NULL )
         return( 1 );

     sha4_starts( &ctx, is384 );

     while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
         sha4_update( &ctx, buf, (int) n );

     sha4_finish( &ctx, output );

     memset( &ctx, 0, sizeof( sha4_context ) );

     if( ferror( f ) != 0 )
     {
         fclose( f );
         return( 2 );
     }

     fclose( f );
     return( 0 );
 }

 /*
  * SHA-512 HMAC context setup
  */
 void sha4_hmac_starts( sha4_context *ctx, unsigned char *key, int keylen,
                        int is384 )
 {
     int i;
     unsigned char sum[64];

     if( keylen > 128 )
     {
         sha4( key, keylen, sum, is384 );
         keylen = ( is384 ) ? 48 : 64;
         key = sum;
     }

     memset( ctx->ipad, 0x36, 128 );
     memset( ctx->opad, 0x5C, 128 );

     for( i = 0; i < keylen; i++ )
     {
         ctx->ipad[i] = (unsigned char)( ctx->ipad[i] ^ key[i] );
         ctx->opad[i] = (unsigned char)( ctx->opad[i] ^ key[i] );
     }

     sha4_starts( ctx, is384 );
     sha4_update( ctx, ctx->ipad, 128 );

     memset( sum, 0, sizeof( sum ) );
 }

 /*
  * SHA-512 HMAC process buffer
  */
 void sha4_hmac_update( sha4_context  *ctx,
                        unsigned char *input, int ilen )
 {
     sha4_update( ctx, input, ilen );
 }

 /*
  * SHA-512 HMAC final digest
  */
 void sha4_hmac_finish( sha4_context *ctx, unsigned char output[64] )
 {
     int is384, hlen;
     unsigned char tmpbuf[64];

     is384 = ctx->is384;
     hlen = ( is384 == 0 ) ? 64 : 48;

     sha4_finish( ctx, tmpbuf );
     sha4_starts( ctx, is384 );
     sha4_update( ctx, ctx->opad, 128 );
     sha4_update( ctx, tmpbuf, hlen );
     sha4_finish( ctx, output );

     memset( tmpbuf, 0, sizeof( tmpbuf ) );
 }

 /*
  * output = HMAC-SHA-512( hmac key, input buffer )
  */
 void sha4_hmac( unsigned char *key, int keylen,
                 unsigned char *input, int ilen,
                 unsigned char output[64], int is384 )
 {
     sha4_context ctx;

     sha4_hmac_starts( &ctx, key, keylen, is384 );
     sha4_hmac_update( &ctx, input, ilen );
     sha4_hmac_finish( &ctx, output );

     memset( &ctx, 0, sizeof( sha4_context ) );
 }

 #if defined(POLARSSL_SELF_TEST)

 /*
  * FIPS-180-2 test vectors
  */
 static unsigned char sha4_test_buf[3][113] =
 {
     { "abc" },
     { "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"
       "hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu" },
     { "" }
 };

 static const int sha4_test_buflen[3] =
 {
     3, 112, 1000
 };

 static const unsigned char sha4_test_sum[6][64] =
 {
     /*
      * SHA-384 test vectors
      */
     { 0xCB, 0x00, 0x75, 0x3F, 0x45, 0xA3, 0x5E, 0x8B,
       0xB5, 0xA0, 0x3D, 0x69, 0x9A, 0xC6, 0x50, 0x07,
       0x27, 0x2C, 0x32, 0xAB, 0x0E, 0xDE, 0xD1, 0x63,
       0x1A, 0x8B, 0x60, 0x5A, 0x43, 0xFF, 0x5B, 0xED,
       0x80, 0x86, 0x07, 0x2B, 0xA1, 0xE7, 0xCC, 0x23,
       0x58, 0xBA, 0xEC, 0xA1, 0x34, 0xC8, 0x25, 0xA7 },
     { 0x09, 0x33, 0x0C, 0x33, 0xF7, 0x11, 0x47, 0xE8,
       0x3D, 0x19, 0x2F, 0xC7, 0x82, 0xCD, 0x1B, 0x47,
       0x53, 0x11, 0x1B, 0x17, 0x3B, 0x3B, 0x05, 0xD2,
       0x2F, 0xA0, 0x80, 0x86, 0xE3, 0xB0, 0xF7, 0x12,
       0xFC, 0xC7, 0xC7, 0x1A, 0x55, 0x7E, 0x2D, 0xB9,
       0x66, 0xC3, 0xE9, 0xFA, 0x91, 0x74, 0x60, 0x39 },
     { 0x9D, 0x0E, 0x18, 0x09, 0x71, 0x64, 0x74, 0xCB,
       0x08, 0x6E, 0x83, 0x4E, 0x31, 0x0A, 0x4A, 0x1C,
       0xED, 0x14, 0x9E, 0x9C, 0x00, 0xF2, 0x48, 0x52,
       0x79, 0x72, 0xCE, 0xC5, 0x70, 0x4C, 0x2A, 0x5B,
       0x07, 0xB8, 0xB3, 0xDC, 0x38, 0xEC, 0xC4, 0xEB,
       0xAE, 0x97, 0xDD, 0xD8, 0x7F, 0x3D, 0x89, 0x85 },

     /*
      * SHA-512 test vectors
      */
     { 0xDD, 0xAF, 0x35, 0xA1, 0x93, 0x61, 0x7A, 0xBA,
       0xCC, 0x41, 0x73, 0x49, 0xAE, 0x20, 0x41, 0x31,
       0x12, 0xE6, 0xFA, 0x4E, 0x89, 0xA9, 0x7E, 0xA2,
       0x0A, 0x9E, 0xEE, 0xE6, 0x4B, 0x55, 0xD3, 0x9A,
       0x21, 0x92, 0x99, 0x2A, 0x27, 0x4F, 0xC1, 0xA8,
       0x36, 0xBA, 0x3C, 0x23, 0xA3, 0xFE, 0xEB, 0xBD,
       0x45, 0x4D, 0x44, 0x23, 0x64, 0x3C, 0xE8, 0x0E,
       0x2A, 0x9A, 0xC9, 0x4F, 0xA5, 0x4C, 0xA4, 0x9F },
     { 0x8E, 0x95, 0x9B, 0x75, 0xDA, 0xE3, 0x13, 0xDA,
       0x8C, 0xF4, 0xF7, 0x28, 0x14, 0xFC, 0x14, 0x3F,
       0x8F, 0x77, 0x79, 0xC6, 0xEB, 0x9F, 0x7F, 0xA1,
       0x72, 0x99, 0xAE, 0xAD, 0xB6, 0x88, 0x90, 0x18,
       0x50, 0x1D, 0x28, 0x9E, 0x49, 0x00, 0xF7, 0xE4,
       0x33, 0x1B, 0x99, 0xDE, 0xC4, 0xB5, 0x43, 0x3A,
       0xC7, 0xD3, 0x29, 0xEE, 0xB6, 0xDD, 0x26, 0x54,
       0x5E, 0x96, 0xE5, 0x5B, 0x87, 0x4B, 0xE9, 0x09 },
     { 0xE7, 0x18, 0x48, 0x3D, 0x0C, 0xE7, 0x69, 0x64,
       0x4E, 0x2E, 0x42, 0xC7, 0xBC, 0x15, 0xB4, 0x63,
       0x8E, 0x1F, 0x98, 0xB1, 0x3B, 0x20, 0x44, 0x28,
       0x56, 0x32, 0xA8, 0x03, 0xAF, 0xA9, 0x73, 0xEB,
       0xDE, 0x0F, 0xF2, 0x44, 0x87, 0x7E, 0xA6, 0x0A,
       0x4C, 0xB0, 0x43, 0x2C, 0xE5, 0x77, 0xC3, 0x1B,
       0xEB, 0x00, 0x9C, 0x5C, 0x2C, 0x49, 0xAA, 0x2E,
       0x4E, 0xAD, 0xB2, 0x17, 0xAD, 0x8C, 0xC0, 0x9B }
 };

 /*
  * RFC 4231 test vectors
  */
 static unsigned char sha4_hmac_test_key[7][26] =
 {
     { "\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B"
       "\x0B\x0B\x0B\x0B" },
     { "Jefe" },
     { "\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA"
       "\xAA\xAA\xAA\xAA" },
     { "\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F\x10"
       "\x11\x12\x13\x14\x15\x16\x17\x18\x19" },
     { "\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C"
       "\x0C\x0C\x0C\x0C" },
     { "" }, /* 0xAA 131 times */
     { "" }
 };

 static const int sha4_hmac_test_keylen[7] =
 {
     20, 4, 20, 25, 20, 131, 131
 };

 static unsigned char sha4_hmac_test_buf[7][153] =
 {
     { "Hi There" },
     { "what do ya want for nothing?" },
     { "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
       "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
       "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
       "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
       "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD" },
     { "\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
       "\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
       "\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
       "\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
       "\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD" },
     { "Test With Truncation" },
     { "Test Using Larger Than Block-Size Key - Hash Key First" },
     { "This is a test using a larger than block-size key "
       "and a larger than block-size data. The key needs to "
       "be hashed before being used by the HMAC algorithm." }
 };

 static const int sha4_hmac_test_buflen[7] =
 {
     8, 28, 50, 50, 20, 54, 152
 };

 static const unsigned char sha4_hmac_test_sum[14][64] =
 {
     /*
      * HMAC-SHA-384 test vectors
      */
     { 0xAF, 0xD0, 0x39, 0x44, 0xD8, 0x48, 0x95, 0x62,
       0x6B, 0x08, 0x25, 0xF4, 0xAB, 0x46, 0x90, 0x7F,
       0x15, 0xF9, 0xDA, 0xDB, 0xE4, 0x10, 0x1E, 0xC6,
       0x82, 0xAA, 0x03, 0x4C, 0x7C, 0xEB, 0xC5, 0x9C,
       0xFA, 0xEA, 0x9E, 0xA9, 0x07, 0x6E, 0xDE, 0x7F,
       0x4A, 0xF1, 0x52, 0xE8, 0xB2, 0xFA, 0x9C, 0xB6 },
     { 0xAF, 0x45, 0xD2, 0xE3, 0x76, 0x48, 0x40, 0x31,
       0x61, 0x7F, 0x78, 0xD2, 0xB5, 0x8A, 0x6B, 0x1B,
       0x9C, 0x7E, 0xF4, 0x64, 0xF5, 0xA0, 0x1B, 0x47,
       0xE4, 0x2E, 0xC3, 0x73, 0x63, 0x22, 0x44, 0x5E,
       0x8E, 0x22, 0x40, 0xCA, 0x5E, 0x69, 0xE2, 0xC7,
       0x8B, 0x32, 0x39, 0xEC, 0xFA, 0xB2, 0x16, 0x49 },
     { 0x88, 0x06, 0x26, 0x08, 0xD3, 0xE6, 0xAD, 0x8A,
       0x0A, 0xA2, 0xAC, 0xE0, 0x14, 0xC8, 0xA8, 0x6F,
       0x0A, 0xA6, 0x35, 0xD9, 0x47, 0xAC, 0x9F, 0xEB,
       0xE8, 0x3E, 0xF4, 0xE5, 0x59, 0x66, 0x14, 0x4B,
       0x2A, 0x5A, 0xB3, 0x9D, 0xC1, 0x38, 0x14, 0xB9,
       0x4E, 0x3A, 0xB6, 0xE1, 0x01, 0xA3, 0x4F, 0x27 },
     { 0x3E, 0x8A, 0x69, 0xB7, 0x78, 0x3C, 0x25, 0x85,
       0x19, 0x33, 0xAB, 0x62, 0x90, 0xAF, 0x6C, 0xA7,
       0x7A, 0x99, 0x81, 0x48, 0x08, 0x50, 0x00, 0x9C,
       0xC5, 0x57, 0x7C, 0x6E, 0x1F, 0x57, 0x3B, 0x4E,
       0x68, 0x01, 0xDD, 0x23, 0xC4, 0xA7, 0xD6, 0x79,
       0xCC, 0xF8, 0xA3, 0x86, 0xC6, 0x74, 0xCF, 0xFB },
     { 0x3A, 0xBF, 0x34, 0xC3, 0x50, 0x3B, 0x2A, 0x23,
       0xA4, 0x6E, 0xFC, 0x61, 0x9B, 0xAE, 0xF8, 0x97 },
     { 0x4E, 0xCE, 0x08, 0x44, 0x85, 0x81, 0x3E, 0x90,
       0x88, 0xD2, 0xC6, 0x3A, 0x04, 0x1B, 0xC5, 0xB4,
       0x4F, 0x9E, 0xF1, 0x01, 0x2A, 0x2B, 0x58, 0x8F,
       0x3C, 0xD1, 0x1F, 0x05, 0x03, 0x3A, 0xC4, 0xC6,
       0x0C, 0x2E, 0xF6, 0xAB, 0x40, 0x30, 0xFE, 0x82,
       0x96, 0x24, 0x8D, 0xF1, 0x63, 0xF4, 0x49, 0x52 },
     { 0x66, 0x17, 0x17, 0x8E, 0x94, 0x1F, 0x02, 0x0D,
       0x35, 0x1E, 0x2F, 0x25, 0x4E, 0x8F, 0xD3, 0x2C,
       0x60, 0x24, 0x20, 0xFE, 0xB0, 0xB8, 0xFB, 0x9A,
       0xDC, 0xCE, 0xBB, 0x82, 0x46, 0x1E, 0x99, 0xC5,
       0xA6, 0x78, 0xCC, 0x31, 0xE7, 0x99, 0x17, 0x6D,
       0x38, 0x60, 0xE6, 0x11, 0x0C, 0x46, 0x52, 0x3E },

     /*
      * HMAC-SHA-512 test vectors
      */
     { 0x87, 0xAA, 0x7C, 0xDE, 0xA5, 0xEF, 0x61, 0x9D,
       0x4F, 0xF0, 0xB4, 0x24, 0x1A, 0x1D, 0x6C, 0xB0,
       0x23, 0x79, 0xF4, 0xE2, 0xCE, 0x4E, 0xC2, 0x78,
       0x7A, 0xD0, 0xB3, 0x05, 0x45, 0xE1, 0x7C, 0xDE,
       0xDA, 0xA8, 0x33, 0xB7, 0xD6, 0xB8, 0xA7, 0x02,
       0x03, 0x8B, 0x27, 0x4E, 0xAE, 0xA3, 0xF4, 0xE4,
       0xBE, 0x9D, 0x91, 0x4E, 0xEB, 0x61, 0xF1, 0x70,
       0x2E, 0x69, 0x6C, 0x20, 0x3A, 0x12, 0x68, 0x54 },
     { 0x16, 0x4B, 0x7A, 0x7B, 0xFC, 0xF8, 0x19, 0xE2,
       0xE3, 0x95, 0xFB, 0xE7, 0x3B, 0x56, 0xE0, 0xA3,
       0x87, 0xBD, 0x64, 0x22, 0x2E, 0x83, 0x1F, 0xD6,
       0x10, 0x27, 0x0C, 0xD7, 0xEA, 0x25, 0x05, 0x54,
       0x97, 0x58, 0xBF, 0x75, 0xC0, 0x5A, 0x99, 0x4A,
       0x6D, 0x03, 0x4F, 0x65, 0xF8, 0xF0, 0xE6, 0xFD,
       0xCA, 0xEA, 0xB1, 0xA3, 0x4D, 0x4A, 0x6B, 0x4B,
       0x63, 0x6E, 0x07, 0x0A, 0x38, 0xBC, 0xE7, 0x37 },
     { 0xFA, 0x73, 0xB0, 0x08, 0x9D, 0x56, 0xA2, 0x84,
       0xEF, 0xB0, 0xF0, 0x75, 0x6C, 0x89, 0x0B, 0xE9,
       0xB1, 0xB5, 0xDB, 0xDD, 0x8E, 0xE8, 0x1A, 0x36,
       0x55, 0xF8, 0x3E, 0x33, 0xB2, 0x27, 0x9D, 0x39,
       0xBF, 0x3E, 0x84, 0x82, 0x79, 0xA7, 0x22, 0xC8,
       0x06, 0xB4, 0x85, 0xA4, 0x7E, 0x67, 0xC8, 0x07,
       0xB9, 0x46, 0xA3, 0x37, 0xBE, 0xE8, 0x94, 0x26,
       0x74, 0x27, 0x88, 0x59, 0xE1, 0x32, 0x92, 0xFB },
     { 0xB0, 0xBA, 0x46, 0x56, 0x37, 0x45, 0x8C, 0x69,
       0x90, 0xE5, 0xA8, 0xC5, 0xF6, 0x1D, 0x4A, 0xF7,
       0xE5, 0x76, 0xD9, 0x7F, 0xF9, 0x4B, 0x87, 0x2D,
       0xE7, 0x6F, 0x80, 0x50, 0x36, 0x1E, 0xE3, 0xDB,
       0xA9, 0x1C, 0xA5, 0xC1, 0x1A, 0xA2, 0x5E, 0xB4,
       0xD6, 0x79, 0x27, 0x5C, 0xC5, 0x78, 0x80, 0x63,
       0xA5, 0xF1, 0x97, 0x41, 0x12, 0x0C, 0x4F, 0x2D,
       0xE2, 0xAD, 0xEB, 0xEB, 0x10, 0xA2, 0x98, 0xDD },
     { 0x41, 0x5F, 0xAD, 0x62, 0x71, 0x58, 0x0A, 0x53,
       0x1D, 0x41, 0x79, 0xBC, 0x89, 0x1D, 0x87, 0xA6 },
     { 0x80, 0xB2, 0x42, 0x63, 0xC7, 0xC1, 0xA3, 0xEB,
       0xB7, 0x14, 0x93, 0xC1, 0xDD, 0x7B, 0xE8, 0xB4,
       0x9B, 0x46, 0xD1, 0xF4, 0x1B, 0x4A, 0xEE, 0xC1,
       0x12, 0x1B, 0x01, 0x37, 0x83, 0xF8, 0xF3, 0x52,
       0x6B, 0x56, 0xD0, 0x37, 0xE0, 0x5F, 0x25, 0x98,
       0xBD, 0x0F, 0xD2, 0x21, 0x5D, 0x6A, 0x1E, 0x52,
       0x95, 0xE6, 0x4F, 0x73, 0xF6, 0x3F, 0x0A, 0xEC,
       0x8B, 0x91, 0x5A, 0x98, 0x5D, 0x78, 0x65, 0x98 },
     { 0xE3, 0x7B, 0x6A, 0x77, 0x5D, 0xC8, 0x7D, 0xBA,
       0xA4, 0xDF, 0xA9, 0xF9, 0x6E, 0x5E, 0x3F, 0xFD,
       0xDE, 0xBD, 0x71, 0xF8, 0x86, 0x72, 0x89, 0x86,
       0x5D, 0xF5, 0xA3, 0x2D, 0x20, 0xCD, 0xC9, 0x44,
       0xB6, 0x02, 0x2C, 0xAC, 0x3C, 0x49, 0x82, 0xB1,
       0x0D, 0x5E, 0xEB, 0x55, 0xC3, 0xE4, 0xDE, 0x15,
       0x13, 0x46, 0x76, 0xFB, 0x6D, 0xE0, 0x44, 0x60,
       0x65, 0xC9, 0x74, 0x40, 0xFA, 0x8C, 0x6A, 0x58 }
 };

 /*
  * Checkup routine
  */
 int sha4_self_test( int verbose )
 {
     int i, j, k, buflen;
     unsigned char buf[1024];
     unsigned char sha4sum[64];
     sha4_context ctx;

     for( i = 0; i < 6; i++ )
     {
         j = i % 3;
         k = i < 3;

         if( verbose != 0 )
             printf( "  SHA-%d test #%d: ", 512 - k * 128, j + 1 );

         sha4_starts( &ctx, k );

         if( j == 2 )
         {
             memset( buf, 'a', buflen = 1000 );

             for( j = 0; j < 1000; j++ )
                 sha4_update( &ctx, buf, buflen );
         }
         else
             sha4_update( &ctx, sha4_test_buf[j],
                                sha4_test_buflen[j] );

         sha4_finish( &ctx, sha4sum );

         if( memcmp( sha4sum, sha4_test_sum[i], 64 - k * 16 ) != 0 )
         {
             if( verbose != 0 )
                 printf( "failed\n" );

             return( 1 );
         }

         if( verbose != 0 )
             printf( "passed\n" );
     }

     if( verbose != 0 )
         printf( "\n" );

     for( i = 0; i < 14; i++ )
     {
         j = i % 7;
         k = i < 7;

         if( verbose != 0 )
             printf( "  HMAC-SHA-%d test #%d: ", 512 - k * 128, j + 1 );

         if( j == 5 || j == 6 )
         {
             memset( buf, '\xAA', buflen = 131 );
             sha4_hmac_starts( &ctx, buf, buflen, k );
         }
         else
             sha4_hmac_starts( &ctx, sha4_hmac_test_key[j],
                                     sha4_hmac_test_keylen[j], k );

         sha4_hmac_update( &ctx, sha4_hmac_test_buf[j],
                                 sha4_hmac_test_buflen[j] );

         sha4_hmac_finish( &ctx, sha4sum );

         buflen = ( j == 4 ) ? 16 : 64 - k * 16;

         if( memcmp( sha4sum, sha4_hmac_test_sum[i], buflen ) != 0 )
         {
             if( verbose != 0 )
                 printf( "failed\n" );

             return( 1 );
         }

         if( verbose != 0 )
             printf( "passed\n" );
     }

     if( verbose != 0 )
         printf( "\n" );

     return( 0 );
 }

 #endif

 #endif
	/*
	* FIPS-180-2 compliant SHA-384/512 implementation
	*
	* Copyright (C) 2006-2009, Paul Bakker <polarssl_maintainer at polarssl.org>
	* All rights reserved.
	*
	* Joined copyright on original XySSL code with: Christophe Devine
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License along
	* with this program; if not, write to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	*/
	/*
	* The SHA-512 Secure Hash Standard was published by NIST in 2002.
	*
	* http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf
	*/

	#include "polarssl/config.h"

	#if defined(POLARSSL_SHA4_C)

	#include "polarssl/sha4.h"

	#include <string.h>
	#include <stdio.h>

	/*
	* 64-bit integer manipulation macros (big endian)
	*/
	#ifndef GET_UINT64_BE
	#define GET_UINT64_BE(n,b,i) \
	{ \
	(n) = ( (unsigned int64) (b)[(i) ] << 56 ) \
	\| ( (unsigned int64) (b)[(i) + 1] << 48 ) \
	\| ( (unsigned int64) (b)[(i) + 2] << 40 ) \
	\| ( (unsigned int64) (b)[(i) + 3] << 32 ) \
	\| ( (unsigned int64) (b)[(i) + 4] << 24 ) \
	\| ( (unsigned int64) (b)[(i) + 5] << 16 ) \
	\| ( (unsigned int64) (b)[(i) + 6] << 8 ) \
	\| ( (unsigned int64) (b)[(i) + 7] ); \
	}
	#endif

	#ifndef PUT_UINT64_BE
	#define PUT_UINT64_BE(n,b,i) \
	{ \
	(b)[(i) ] = (unsigned char) ( (n) >> 56 ); \
	(b)[(i) + 1] = (unsigned char) ( (n) >> 48 ); \
	(b)[(i) + 2] = (unsigned char) ( (n) >> 40 ); \
	(b)[(i) + 3] = (unsigned char) ( (n) >> 32 ); \
	(b)[(i) + 4] = (unsigned char) ( (n) >> 24 ); \
	(b)[(i) + 5] = (unsigned char) ( (n) >> 16 ); \
	(b)[(i) + 6] = (unsigned char) ( (n) >> 8 ); \
	(b)[(i) + 7] = (unsigned char) ( (n) ); \
	}
	#endif

	/*
	* Round constants
	*/
	static const unsigned int64 K[80] =
	{
	UL64(0x428A2F98D728AE22), UL64(0x7137449123EF65CD),
	UL64(0xB5C0FBCFEC4D3B2F), UL64(0xE9B5DBA58189DBBC),
	UL64(0x3956C25BF348B538), UL64(0x59F111F1B605D019),
	UL64(0x923F82A4AF194F9B), UL64(0xAB1C5ED5DA6D8118),
	UL64(0xD807AA98A3030242), UL64(0x12835B0145706FBE),
	UL64(0x243185BE4EE4B28C), UL64(0x550C7DC3D5FFB4E2),
	UL64(0x72BE5D74F27B896F), UL64(0x80DEB1FE3B1696B1),
	UL64(0x9BDC06A725C71235), UL64(0xC19BF174CF692694),
	UL64(0xE49B69C19EF14AD2), UL64(0xEFBE4786384F25E3),
	UL64(0x0FC19DC68B8CD5B5), UL64(0x240CA1CC77AC9C65),
	UL64(0x2DE92C6F592B0275), UL64(0x4A7484AA6EA6E483),
	UL64(0x5CB0A9DCBD41FBD4), UL64(0x76F988DA831153B5),
	UL64(0x983E5152EE66DFAB), UL64(0xA831C66D2DB43210),
	UL64(0xB00327C898FB213F), UL64(0xBF597FC7BEEF0EE4),
	UL64(0xC6E00BF33DA88FC2), UL64(0xD5A79147930AA725),
	UL64(0x06CA6351E003826F), UL64(0x142929670A0E6E70),
	UL64(0x27B70A8546D22FFC), UL64(0x2E1B21385C26C926),
	UL64(0x4D2C6DFC5AC42AED), UL64(0x53380D139D95B3DF),
	UL64(0x650A73548BAF63DE), UL64(0x766A0ABB3C77B2A8),
	UL64(0x81C2C92E47EDAEE6), UL64(0x92722C851482353B),
	UL64(0xA2BFE8A14CF10364), UL64(0xA81A664BBC423001),
	UL64(0xC24B8B70D0F89791), UL64(0xC76C51A30654BE30),
	UL64(0xD192E819D6EF5218), UL64(0xD69906245565A910),
	UL64(0xF40E35855771202A), UL64(0x106AA07032BBD1B8),
	UL64(0x19A4C116B8D2D0C8), UL64(0x1E376C085141AB53),
	UL64(0x2748774CDF8EEB99), UL64(0x34B0BCB5E19B48A8),
	UL64(0x391C0CB3C5C95A63), UL64(0x4ED8AA4AE3418ACB),
	UL64(0x5B9CCA4F7763E373), UL64(0x682E6FF3D6B2B8A3),
	UL64(0x748F82EE5DEFB2FC), UL64(0x78A5636F43172F60),
	UL64(0x84C87814A1F0AB72), UL64(0x8CC702081A6439EC),
	UL64(0x90BEFFFA23631E28), UL64(0xA4506CEBDE82BDE9),
	UL64(0xBEF9A3F7B2C67915), UL64(0xC67178F2E372532B),
	UL64(0xCA273ECEEA26619C), UL64(0xD186B8C721C0C207),
	UL64(0xEADA7DD6CDE0EB1E), UL64(0xF57D4F7FEE6ED178),
	UL64(0x06F067AA72176FBA), UL64(0x0A637DC5A2C898A6),
	UL64(0x113F9804BEF90DAE), UL64(0x1B710B35131C471B),
	UL64(0x28DB77F523047D84), UL64(0x32CAAB7B40C72493),
	UL64(0x3C9EBE0A15C9BEBC), UL64(0x431D67C49C100D4C),
	UL64(0x4CC5D4BECB3E42B6), UL64(0x597F299CFC657E2A),
	UL64(0x5FCB6FAB3AD6FAEC), UL64(0x6C44198C4A475817)
	};

	/*
	* SHA-512 context setup
	*/
	void sha4_starts( sha4_context *ctx, int is384 )
	{
	ctx->total[0] = 0;
	ctx->total[1] = 0;

	if( is384 == 0 )
	{
	/* SHA-512 */
	ctx->state[0] = UL64(0x6A09E667F3BCC908);
	ctx->state[1] = UL64(0xBB67AE8584CAA73B);
	ctx->state[2] = UL64(0x3C6EF372FE94F82B);
	ctx->state[3] = UL64(0xA54FF53A5F1D36F1);
	ctx->state[4] = UL64(0x510E527FADE682D1);
	ctx->state[5] = UL64(0x9B05688C2B3E6C1F);
	ctx->state[6] = UL64(0x1F83D9ABFB41BD6B);
	ctx->state[7] = UL64(0x5BE0CD19137E2179);
	}
	else
	{
	/* SHA-384 */
	ctx->state[0] = UL64(0xCBBB9D5DC1059ED8);
	ctx->state[1] = UL64(0x629A292A367CD507);
	ctx->state[2] = UL64(0x9159015A3070DD17);
	ctx->state[3] = UL64(0x152FECD8F70E5939);
	ctx->state[4] = UL64(0x67332667FFC00B31);
	ctx->state[5] = UL64(0x8EB44A8768581511);
	ctx->state[6] = UL64(0xDB0C2E0D64F98FA7);
	ctx->state[7] = UL64(0x47B5481DBEFA4FA4);
	}

	ctx->is384 = is384;
	}

	static void sha4_process( sha4_context *ctx, unsigned char data[128] )
	{
	int i;
	unsigned int64 temp1, temp2, W[80];
	unsigned int64 A, B, C, D, E, F, G, H;

	#define SHR(x,n) (x >> n)
	#define ROTR(x,n) (SHR(x,n) \| (x << (64 - n)))

	#define S0(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHR(x, 7))
	#define S1(x) (ROTR(x,19) ^ ROTR(x,61) ^ SHR(x, 6))

	#define S2(x) (ROTR(x,28) ^ ROTR(x,34) ^ ROTR(x,39))
	#define S3(x) (ROTR(x,14) ^ ROTR(x,18) ^ ROTR(x,41))

	#define F0(x,y,z) ((x & y) \| (z & (x \| y)))
	#define F1(x,y,z) (z ^ (x & (y ^ z)))

	#define P(a,b,c,d,e,f,g,h,x,K) \
	{ \
	temp1 = h + S3(e) + F1(e,f,g) + K + x; \
	temp2 = S2(a) + F0(a,b,c); \
	d += temp1; h = temp1 + temp2; \
	}

	for( i = 0; i < 16; i++ )
	{
	GET_UINT64_BE( W[i], data, i << 3 );
	}

	for( ; i < 80; i++ )
	{
	W[i] = S1(W[i - 2]) + W[i - 7] +
	S0(W[i - 15]) + W[i - 16];
	}

	A = ctx->state[0];
	B = ctx->state[1];
	C = ctx->state[2];
	D = ctx->state[3];
	E = ctx->state[4];
	F = ctx->state[5];
	G = ctx->state[6];
	H = ctx->state[7];
	i = 0;

	do
	{
	P( A, B, C, D, E, F, G, H, W[i], K[i] ); i++;
	P( H, A, B, C, D, E, F, G, W[i], K[i] ); i++;
	P( G, H, A, B, C, D, E, F, W[i], K[i] ); i++;
	P( F, G, H, A, B, C, D, E, W[i], K[i] ); i++;
	P( E, F, G, H, A, B, C, D, W[i], K[i] ); i++;
	P( D, E, F, G, H, A, B, C, W[i], K[i] ); i++;
	P( C, D, E, F, G, H, A, B, W[i], K[i] ); i++;
	P( B, C, D, E, F, G, H, A, W[i], K[i] ); i++;
	}
	while( i < 80 );

	ctx->state[0] += A;
	ctx->state[1] += B;
	ctx->state[2] += C;
	ctx->state[3] += D;
	ctx->state[4] += E;
	ctx->state[5] += F;
	ctx->state[6] += G;
	ctx->state[7] += H;
	}

	/*
	* SHA-512 process buffer
	*/
	void sha4_update( sha4_context ctx, unsigned char input, int ilen )
	{
	int fill;
	unsigned int64 left;

	if( ilen <= 0 )
	return;

	left = ctx->total[0] & 0x7F;
	fill = (int)( 128 - left );

	ctx->total[0] += ilen;

	if( ctx->total[0] < (unsigned int64) ilen )
	ctx->total[1]++;

	if( left && ilen >= fill )
	{
	memcpy( (void *) (ctx->buffer + left),
	(void *) input, fill );
	sha4_process( ctx, ctx->buffer );
	input += fill;
	ilen -= fill;
	left = 0;
	}

	while( ilen >= 128 )
	{
	sha4_process( ctx, input );
	input += 128;
	ilen -= 128;
	}

	if( ilen > 0 )
	{
	memcpy( (void *) (ctx->buffer + left),
	(void *) input, ilen );
	}
	}

	static const unsigned char sha4_padding[128] =
	{
	0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
	};

	/*
	* SHA-512 final digest
	*/
	void sha4_finish( sha4_context *ctx, unsigned char output[64] )
	{
	int last, padn;
	unsigned int64 high, low;
	unsigned char msglen[16];

	high = ( ctx->total[0] >> 61 )
	\| ( ctx->total[1] << 3 );
	low = ( ctx->total[0] << 3 );

	PUT_UINT64_BE( high, msglen, 0 );
	PUT_UINT64_BE( low, msglen, 8 );

	last = (int)( ctx->total[0] & 0x7F );
	padn = ( last < 112 ) ? ( 112 - last ) : ( 240 - last );

	sha4_update( ctx, (unsigned char *) sha4_padding, padn );
	sha4_update( ctx, msglen, 16 );

	PUT_UINT64_BE( ctx->state[0], output, 0 );
	PUT_UINT64_BE( ctx->state[1], output, 8 );
	PUT_UINT64_BE( ctx->state[2], output, 16 );
	PUT_UINT64_BE( ctx->state[3], output, 24 );
	PUT_UINT64_BE( ctx->state[4], output, 32 );
	PUT_UINT64_BE( ctx->state[5], output, 40 );

	if( ctx->is384 == 0 )
	{
	PUT_UINT64_BE( ctx->state[6], output, 48 );
	PUT_UINT64_BE( ctx->state[7], output, 56 );
	}
	}

	/*
	* output = SHA-512( input buffer )
	*/
	void sha4( unsigned char *input, int ilen,
	unsigned char output[64], int is384 )
	{
	sha4_context ctx;

	sha4_starts( &ctx, is384 );
	sha4_update( &ctx, input, ilen );
	sha4_finish( &ctx, output );

	memset( &ctx, 0, sizeof( sha4_context ) );
	}

	/*
	* output = SHA-512( file contents )
	*/
	int sha4_file( char *path, unsigned char output[64], int is384 )
	{
	FILE *f;
	size_t n;
	sha4_context ctx;
	unsigned char buf[1024];

	if( ( f = fopen( path, "rb" ) ) == NULL )
	return( 1 );

	sha4_starts( &ctx, is384 );

	while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
	sha4_update( &ctx, buf, (int) n );

	sha4_finish( &ctx, output );

	memset( &ctx, 0, sizeof( sha4_context ) );

	if( ferror( f ) != 0 )
	{
	fclose( f );
	return( 2 );
	}

	fclose( f );
	return( 0 );
	}

	/*
	* SHA-512 HMAC context setup
	*/
	void sha4_hmac_starts( sha4_context ctx, unsigned char key, int keylen,
	int is384 )
	{
	int i;
	unsigned char sum[64];

	if( keylen > 128 )
	{
	sha4( key, keylen, sum, is384 );
	keylen = ( is384 ) ? 48 : 64;
	key = sum;
	}

	memset( ctx->ipad, 0x36, 128 );
	memset( ctx->opad, 0x5C, 128 );

	for( i = 0; i < keylen; i++ )
	{
	ctx->ipad[i] = (unsigned char)( ctx->ipad[i] ^ key[i] );
	ctx->opad[i] = (unsigned char)( ctx->opad[i] ^ key[i] );
	}

	sha4_starts( ctx, is384 );
	sha4_update( ctx, ctx->ipad, 128 );

	memset( sum, 0, sizeof( sum ) );
	}

	/*
	* SHA-512 HMAC process buffer
	*/
	void sha4_hmac_update( sha4_context *ctx,
	unsigned char *input, int ilen )
	{
	sha4_update( ctx, input, ilen );
	}

	/*
	* SHA-512 HMAC final digest
	*/
	void sha4_hmac_finish( sha4_context *ctx, unsigned char output[64] )
	{
	int is384, hlen;
	unsigned char tmpbuf[64];

	is384 = ctx->is384;
	hlen = ( is384 == 0 ) ? 64 : 48;

	sha4_finish( ctx, tmpbuf );
	sha4_starts( ctx, is384 );
	sha4_update( ctx, ctx->opad, 128 );
	sha4_update( ctx, tmpbuf, hlen );
	sha4_finish( ctx, output );

	memset( tmpbuf, 0, sizeof( tmpbuf ) );
	}

	/*
	* output = HMAC-SHA-512( hmac key, input buffer )
	*/
	void sha4_hmac( unsigned char *key, int keylen,
	unsigned char *input, int ilen,
	unsigned char output[64], int is384 )
	{
	sha4_context ctx;

	sha4_hmac_starts( &ctx, key, keylen, is384 );
	sha4_hmac_update( &ctx, input, ilen );
	sha4_hmac_finish( &ctx, output );

	memset( &ctx, 0, sizeof( sha4_context ) );
	}

	#if defined(POLARSSL_SELF_TEST)

	/*
	* FIPS-180-2 test vectors
	*/
	static unsigned char sha4_test_buf[3][113] =
	{
	{ "abc" },
	{ "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"
	"hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu" },
	{ "" }
	};

	static const int sha4_test_buflen[3] =
	{
	3, 112, 1000
	};

	static const unsigned char sha4_test_sum[6][64] =
	{
	/*
	* SHA-384 test vectors
	*/
	{ 0xCB, 0x00, 0x75, 0x3F, 0x45, 0xA3, 0x5E, 0x8B,
	0xB5, 0xA0, 0x3D, 0x69, 0x9A, 0xC6, 0x50, 0x07,
	0x27, 0x2C, 0x32, 0xAB, 0x0E, 0xDE, 0xD1, 0x63,
	0x1A, 0x8B, 0x60, 0x5A, 0x43, 0xFF, 0x5B, 0xED,
	0x80, 0x86, 0x07, 0x2B, 0xA1, 0xE7, 0xCC, 0x23,
	0x58, 0xBA, 0xEC, 0xA1, 0x34, 0xC8, 0x25, 0xA7 },
	{ 0x09, 0x33, 0x0C, 0x33, 0xF7, 0x11, 0x47, 0xE8,
	0x3D, 0x19, 0x2F, 0xC7, 0x82, 0xCD, 0x1B, 0x47,
	0x53, 0x11, 0x1B, 0x17, 0x3B, 0x3B, 0x05, 0xD2,
	0x2F, 0xA0, 0x80, 0x86, 0xE3, 0xB0, 0xF7, 0x12,
	0xFC, 0xC7, 0xC7, 0x1A, 0x55, 0x7E, 0x2D, 0xB9,
	0x66, 0xC3, 0xE9, 0xFA, 0x91, 0x74, 0x60, 0x39 },
	{ 0x9D, 0x0E, 0x18, 0x09, 0x71, 0x64, 0x74, 0xCB,
	0x08, 0x6E, 0x83, 0x4E, 0x31, 0x0A, 0x4A, 0x1C,
	0xED, 0x14, 0x9E, 0x9C, 0x00, 0xF2, 0x48, 0x52,
	0x79, 0x72, 0xCE, 0xC5, 0x70, 0x4C, 0x2A, 0x5B,
	0x07, 0xB8, 0xB3, 0xDC, 0x38, 0xEC, 0xC4, 0xEB,
	0xAE, 0x97, 0xDD, 0xD8, 0x7F, 0x3D, 0x89, 0x85 },

	/*
	* SHA-512 test vectors
	*/
	{ 0xDD, 0xAF, 0x35, 0xA1, 0x93, 0x61, 0x7A, 0xBA,
	0xCC, 0x41, 0x73, 0x49, 0xAE, 0x20, 0x41, 0x31,
	0x12, 0xE6, 0xFA, 0x4E, 0x89, 0xA9, 0x7E, 0xA2,
	0x0A, 0x9E, 0xEE, 0xE6, 0x4B, 0x55, 0xD3, 0x9A,
	0x21, 0x92, 0x99, 0x2A, 0x27, 0x4F, 0xC1, 0xA8,
	0x36, 0xBA, 0x3C, 0x23, 0xA3, 0xFE, 0xEB, 0xBD,
	0x45, 0x4D, 0x44, 0x23, 0x64, 0x3C, 0xE8, 0x0E,
	0x2A, 0x9A, 0xC9, 0x4F, 0xA5, 0x4C, 0xA4, 0x9F },
	{ 0x8E, 0x95, 0x9B, 0x75, 0xDA, 0xE3, 0x13, 0xDA,
	0x8C, 0xF4, 0xF7, 0x28, 0x14, 0xFC, 0x14, 0x3F,
	0x8F, 0x77, 0x79, 0xC6, 0xEB, 0x9F, 0x7F, 0xA1,
	0x72, 0x99, 0xAE, 0xAD, 0xB6, 0x88, 0x90, 0x18,
	0x50, 0x1D, 0x28, 0x9E, 0x49, 0x00, 0xF7, 0xE4,
	0x33, 0x1B, 0x99, 0xDE, 0xC4, 0xB5, 0x43, 0x3A,
	0xC7, 0xD3, 0x29, 0xEE, 0xB6, 0xDD, 0x26, 0x54,
	0x5E, 0x96, 0xE5, 0x5B, 0x87, 0x4B, 0xE9, 0x09 },
	{ 0xE7, 0x18, 0x48, 0x3D, 0x0C, 0xE7, 0x69, 0x64,
	0x4E, 0x2E, 0x42, 0xC7, 0xBC, 0x15, 0xB4, 0x63,
	0x8E, 0x1F, 0x98, 0xB1, 0x3B, 0x20, 0x44, 0x28,
	0x56, 0x32, 0xA8, 0x03, 0xAF, 0xA9, 0x73, 0xEB,
	0xDE, 0x0F, 0xF2, 0x44, 0x87, 0x7E, 0xA6, 0x0A,
	0x4C, 0xB0, 0x43, 0x2C, 0xE5, 0x77, 0xC3, 0x1B,
	0xEB, 0x00, 0x9C, 0x5C, 0x2C, 0x49, 0xAA, 0x2E,
	0x4E, 0xAD, 0xB2, 0x17, 0xAD, 0x8C, 0xC0, 0x9B }
	};

	/*
	* RFC 4231 test vectors
	*/
	static unsigned char sha4_hmac_test_key[7][26] =
	{
	{ "\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B"
	"\x0B\x0B\x0B\x0B" },
	{ "Jefe" },
	{ "\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA"
	"\xAA\xAA\xAA\xAA" },
	{ "\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F\x10"
	"\x11\x12\x13\x14\x15\x16\x17\x18\x19" },
	{ "\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C"
	"\x0C\x0C\x0C\x0C" },
	{ "" }, /* 0xAA 131 times */
	{ "" }
	};

	static const int sha4_hmac_test_keylen[7] =
	{
	20, 4, 20, 25, 20, 131, 131
	};

	static unsigned char sha4_hmac_test_buf[7][153] =
	{
	{ "Hi There" },
	{ "what do ya want for nothing?" },
	{ "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
	"\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
	"\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
	"\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
	"\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD" },
	{ "\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
	"\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
	"\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
	"\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
	"\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD" },
	{ "Test With Truncation" },
	{ "Test Using Larger Than Block-Size Key - Hash Key First" },
	{ "This is a test using a larger than block-size key "
	"and a larger than block-size data. The key needs to "
	"be hashed before being used by the HMAC algorithm." }
	};

	static const int sha4_hmac_test_buflen[7] =
	{
	8, 28, 50, 50, 20, 54, 152
	};

	static const unsigned char sha4_hmac_test_sum[14][64] =
	{
	/*
	* HMAC-SHA-384 test vectors
	*/
	{ 0xAF, 0xD0, 0x39, 0x44, 0xD8, 0x48, 0x95, 0x62,
	0x6B, 0x08, 0x25, 0xF4, 0xAB, 0x46, 0x90, 0x7F,
	0x15, 0xF9, 0xDA, 0xDB, 0xE4, 0x10, 0x1E, 0xC6,
	0x82, 0xAA, 0x03, 0x4C, 0x7C, 0xEB, 0xC5, 0x9C,
	0xFA, 0xEA, 0x9E, 0xA9, 0x07, 0x6E, 0xDE, 0x7F,
	0x4A, 0xF1, 0x52, 0xE8, 0xB2, 0xFA, 0x9C, 0xB6 },
	{ 0xAF, 0x45, 0xD2, 0xE3, 0x76, 0x48, 0x40, 0x31,
	0x61, 0x7F, 0x78, 0xD2, 0xB5, 0x8A, 0x6B, 0x1B,
	0x9C, 0x7E, 0xF4, 0x64, 0xF5, 0xA0, 0x1B, 0x47,
	0xE4, 0x2E, 0xC3, 0x73, 0x63, 0x22, 0x44, 0x5E,
	0x8E, 0x22, 0x40, 0xCA, 0x5E, 0x69, 0xE2, 0xC7,
	0x8B, 0x32, 0x39, 0xEC, 0xFA, 0xB2, 0x16, 0x49 },
	{ 0x88, 0x06, 0x26, 0x08, 0xD3, 0xE6, 0xAD, 0x8A,
	0x0A, 0xA2, 0xAC, 0xE0, 0x14, 0xC8, 0xA8, 0x6F,
	0x0A, 0xA6, 0x35, 0xD9, 0x47, 0xAC, 0x9F, 0xEB,
	0xE8, 0x3E, 0xF4, 0xE5, 0x59, 0x66, 0x14, 0x4B,
	0x2A, 0x5A, 0xB3, 0x9D, 0xC1, 0x38, 0x14, 0xB9,
	0x4E, 0x3A, 0xB6, 0xE1, 0x01, 0xA3, 0x4F, 0x27 },
	{ 0x3E, 0x8A, 0x69, 0xB7, 0x78, 0x3C, 0x25, 0x85,
	0x19, 0x33, 0xAB, 0x62, 0x90, 0xAF, 0x6C, 0xA7,
	0x7A, 0x99, 0x81, 0x48, 0x08, 0x50, 0x00, 0x9C,
	0xC5, 0x57, 0x7C, 0x6E, 0x1F, 0x57, 0x3B, 0x4E,
	0x68, 0x01, 0xDD, 0x23, 0xC4, 0xA7, 0xD6, 0x79,
	0xCC, 0xF8, 0xA3, 0x86, 0xC6, 0x74, 0xCF, 0xFB },
	{ 0x3A, 0xBF, 0x34, 0xC3, 0x50, 0x3B, 0x2A, 0x23,
	0xA4, 0x6E, 0xFC, 0x61, 0x9B, 0xAE, 0xF8, 0x97 },
	{ 0x4E, 0xCE, 0x08, 0x44, 0x85, 0x81, 0x3E, 0x90,
	0x88, 0xD2, 0xC6, 0x3A, 0x04, 0x1B, 0xC5, 0xB4,
	0x4F, 0x9E, 0xF1, 0x01, 0x2A, 0x2B, 0x58, 0x8F,
	0x3C, 0xD1, 0x1F, 0x05, 0x03, 0x3A, 0xC4, 0xC6,
	0x0C, 0x2E, 0xF6, 0xAB, 0x40, 0x30, 0xFE, 0x82,
	0x96, 0x24, 0x8D, 0xF1, 0x63, 0xF4, 0x49, 0x52 },
	{ 0x66, 0x17, 0x17, 0x8E, 0x94, 0x1F, 0x02, 0x0D,
	0x35, 0x1E, 0x2F, 0x25, 0x4E, 0x8F, 0xD3, 0x2C,
	0x60, 0x24, 0x20, 0xFE, 0xB0, 0xB8, 0xFB, 0x9A,
	0xDC, 0xCE, 0xBB, 0x82, 0x46, 0x1E, 0x99, 0xC5,
	0xA6, 0x78, 0xCC, 0x31, 0xE7, 0x99, 0x17, 0x6D,
	0x38, 0x60, 0xE6, 0x11, 0x0C, 0x46, 0x52, 0x3E },

	/*
	* HMAC-SHA-512 test vectors
	*/
	{ 0x87, 0xAA, 0x7C, 0xDE, 0xA5, 0xEF, 0x61, 0x9D,
	0x4F, 0xF0, 0xB4, 0x24, 0x1A, 0x1D, 0x6C, 0xB0,
	0x23, 0x79, 0xF4, 0xE2, 0xCE, 0x4E, 0xC2, 0x78,
	0x7A, 0xD0, 0xB3, 0x05, 0x45, 0xE1, 0x7C, 0xDE,
	0xDA, 0xA8, 0x33, 0xB7, 0xD6, 0xB8, 0xA7, 0x02,
	0x03, 0x8B, 0x27, 0x4E, 0xAE, 0xA3, 0xF4, 0xE4,
	0xBE, 0x9D, 0x91, 0x4E, 0xEB, 0x61, 0xF1, 0x70,
	0x2E, 0x69, 0x6C, 0x20, 0x3A, 0x12, 0x68, 0x54 },
	{ 0x16, 0x4B, 0x7A, 0x7B, 0xFC, 0xF8, 0x19, 0xE2,
	0xE3, 0x95, 0xFB, 0xE7, 0x3B, 0x56, 0xE0, 0xA3,
	0x87, 0xBD, 0x64, 0x22, 0x2E, 0x83, 0x1F, 0xD6,
	0x10, 0x27, 0x0C, 0xD7, 0xEA, 0x25, 0x05, 0x54,
	0x97, 0x58, 0xBF, 0x75, 0xC0, 0x5A, 0x99, 0x4A,
	0x6D, 0x03, 0x4F, 0x65, 0xF8, 0xF0, 0xE6, 0xFD,
	0xCA, 0xEA, 0xB1, 0xA3, 0x4D, 0x4A, 0x6B, 0x4B,
	0x63, 0x6E, 0x07, 0x0A, 0x38, 0xBC, 0xE7, 0x37 },
	{ 0xFA, 0x73, 0xB0, 0x08, 0x9D, 0x56, 0xA2, 0x84,
	0xEF, 0xB0, 0xF0, 0x75, 0x6C, 0x89, 0x0B, 0xE9,
	0xB1, 0xB5, 0xDB, 0xDD, 0x8E, 0xE8, 0x1A, 0x36,
	0x55, 0xF8, 0x3E, 0x33, 0xB2, 0x27, 0x9D, 0x39,
	0xBF, 0x3E, 0x84, 0x82, 0x79, 0xA7, 0x22, 0xC8,
	0x06, 0xB4, 0x85, 0xA4, 0x7E, 0x67, 0xC8, 0x07,
	0xB9, 0x46, 0xA3, 0x37, 0xBE, 0xE8, 0x94, 0x26,
	0x74, 0x27, 0x88, 0x59, 0xE1, 0x32, 0x92, 0xFB },
	{ 0xB0, 0xBA, 0x46, 0x56, 0x37, 0x45, 0x8C, 0x69,
	0x90, 0xE5, 0xA8, 0xC5, 0xF6, 0x1D, 0x4A, 0xF7,
	0xE5, 0x76, 0xD9, 0x7F, 0xF9, 0x4B, 0x87, 0x2D,
	0xE7, 0x6F, 0x80, 0x50, 0x36, 0x1E, 0xE3, 0xDB,
	0xA9, 0x1C, 0xA5, 0xC1, 0x1A, 0xA2, 0x5E, 0xB4,
	0xD6, 0x79, 0x27, 0x5C, 0xC5, 0x78, 0x80, 0x63,
	0xA5, 0xF1, 0x97, 0x41, 0x12, 0x0C, 0x4F, 0x2D,
	0xE2, 0xAD, 0xEB, 0xEB, 0x10, 0xA2, 0x98, 0xDD },
	{ 0x41, 0x5F, 0xAD, 0x62, 0x71, 0x58, 0x0A, 0x53,
	0x1D, 0x41, 0x79, 0xBC, 0x89, 0x1D, 0x87, 0xA6 },
	{ 0x80, 0xB2, 0x42, 0x63, 0xC7, 0xC1, 0xA3, 0xEB,
	0xB7, 0x14, 0x93, 0xC1, 0xDD, 0x7B, 0xE8, 0xB4,
	0x9B, 0x46, 0xD1, 0xF4, 0x1B, 0x4A, 0xEE, 0xC1,
	0x12, 0x1B, 0x01, 0x37, 0x83, 0xF8, 0xF3, 0x52,
	0x6B, 0x56, 0xD0, 0x37, 0xE0, 0x5F, 0x25, 0x98,
	0xBD, 0x0F, 0xD2, 0x21, 0x5D, 0x6A, 0x1E, 0x52,
	0x95, 0xE6, 0x4F, 0x73, 0xF6, 0x3F, 0x0A, 0xEC,
	0x8B, 0x91, 0x5A, 0x98, 0x5D, 0x78, 0x65, 0x98 },
	{ 0xE3, 0x7B, 0x6A, 0x77, 0x5D, 0xC8, 0x7D, 0xBA,
	0xA4, 0xDF, 0xA9, 0xF9, 0x6E, 0x5E, 0x3F, 0xFD,
	0xDE, 0xBD, 0x71, 0xF8, 0x86, 0x72, 0x89, 0x86,
	0x5D, 0xF5, 0xA3, 0x2D, 0x20, 0xCD, 0xC9, 0x44,
	0xB6, 0x02, 0x2C, 0xAC, 0x3C, 0x49, 0x82, 0xB1,
	0x0D, 0x5E, 0xEB, 0x55, 0xC3, 0xE4, 0xDE, 0x15,
	0x13, 0x46, 0x76, 0xFB, 0x6D, 0xE0, 0x44, 0x60,
	0x65, 0xC9, 0x74, 0x40, 0xFA, 0x8C, 0x6A, 0x58 }
	};

	/*
	* Checkup routine
	*/
	int sha4_self_test( int verbose )
	{
	int i, j, k, buflen;
	unsigned char buf[1024];
	unsigned char sha4sum[64];
	sha4_context ctx;

	for( i = 0; i < 6; i++ )
	{
	j = i % 3;
	k = i < 3;

	if( verbose != 0 )
	printf( " SHA-%d test #%d: ", 512 - k * 128, j + 1 );

	sha4_starts( &ctx, k );

	if( j == 2 )
	{
	memset( buf, 'a', buflen = 1000 );

	for( j = 0; j < 1000; j++ )
	sha4_update( &ctx, buf, buflen );
	}
	else
	sha4_update( &ctx, sha4_test_buf[j],
	sha4_test_buflen[j] );

	sha4_finish( &ctx, sha4sum );

	if( memcmp( sha4sum, sha4_test_sum[i], 64 - k * 16 ) != 0 )
	{
	if( verbose != 0 )
	printf( "failed\n" );

	return( 1 );
	}

	if( verbose != 0 )
	printf( "passed\n" );
	}

	if( verbose != 0 )
	printf( "\n" );

	for( i = 0; i < 14; i++ )
	{
	j = i % 7;
	k = i < 7;

	if( verbose != 0 )
	printf( " HMAC-SHA-%d test #%d: ", 512 - k * 128, j + 1 );

	if( j == 5 \|\| j == 6 )
	{
	memset( buf, '\xAA', buflen = 131 );
	sha4_hmac_starts( &ctx, buf, buflen, k );
	}
	else
	sha4_hmac_starts( &ctx, sha4_hmac_test_key[j],
	sha4_hmac_test_keylen[j], k );

	sha4_hmac_update( &ctx, sha4_hmac_test_buf[j],
	sha4_hmac_test_buflen[j] );

	sha4_hmac_finish( &ctx, sha4sum );

	buflen = ( j == 4 ) ? 16 : 64 - k * 16;

	if( memcmp( sha4sum, sha4_hmac_test_sum[i], buflen ) != 0 )
	{
	if( verbose != 0 )
	printf( "failed\n" );

	return( 1 );
	}

	if( verbose != 0 )
	printf( "passed\n" );
	}

	if( verbose != 0 )
	printf( "\n" );

	return( 0 );
	}

	#endif

	#endif