34 #if defined(POLARSSL_RSA_C)
55 #if defined(POLARSSL_GENPRIME)
61 int (*f_rng)(
void *,
unsigned char *,
size_t),
63 unsigned int nbits,
int exponent )
68 if( f_rng == NULL || nbits < 128 || exponent < 3 )
137 if( !ctx->
N.
p || !ctx->
E.
p )
140 if( ( ctx->
N.
p[0] & 1 ) == 0 ||
141 ( ctx->
E.
p[0] & 1 ) == 0 )
161 mpi PQ, DE, P1, Q1, H, I, G, G2, L1, L2;
166 if( !ctx->
P.
p || !ctx->
Q.
p || !ctx->
D.
p )
215 const unsigned char *input,
216 unsigned char *output )
250 const unsigned char *input,
251 unsigned char *output )
267 #if defined(POLARSSL_RSA_NO_CRT)
306 #if defined(POLARSSL_PKCS1_V21)
316 static void mgf_mask(
unsigned char *dst,
size_t dlen,
unsigned char *src,
size_t slen,
320 unsigned char counter[4];
326 memset( counter, 0, 4 );
345 for( i = 0; i < use_len; ++i )
359 int (*f_rng)(
void *,
unsigned char *,
size_t),
361 int mode,
size_t ilen,
362 const unsigned char *input,
363 unsigned char *output )
367 unsigned char *p = output;
368 #if defined(POLARSSL_PKCS1_V21)
383 if( olen < ilen + 11 )
386 nb_pad = olen - 3 - ilen;
391 while( nb_pad-- > 0 )
396 ret = f_rng( p_rng, p, 1 );
397 }
while( *p == 0 && --rng_dl && ret == 0 );
401 if( rng_dl == 0 || ret != 0)
407 memcpy( p, input, ilen );
410 #if defined(POLARSSL_PKCS1_V21)
414 if( md_info == NULL )
419 if( olen < ilen + 2 * hlen + 2 || f_rng == NULL )
422 memset( output, 0, olen );
431 if( ( ret = f_rng( p_rng, p, hlen ) ) != 0 )
438 md( md_info, p, 0, p );
440 p += olen - 2 * hlen - 2 - ilen;
442 memcpy( p, input, ilen );
446 mgf_mask( output + hlen + 1, olen - hlen - 1, output + 1, hlen,
451 mgf_mask( output + 1, hlen, output + hlen + 1, olen - hlen - 1,
470 int mode,
size_t *olen,
471 const unsigned char *input,
472 unsigned char *output,
473 size_t output_max_len)
478 unsigned char buf[1024];
479 #if defined(POLARSSL_PKCS1_V21)
488 if( ilen < 16 || ilen >
sizeof( buf ) )
509 if( p >= buf + ilen - 1 )
516 #if defined(POLARSSL_PKCS1_V21)
523 if( md_info == NULL )
533 md( md_info, lhash, 0, lhash );
537 mgf_mask( buf + 1, hlen, buf + hlen + 1, ilen - hlen - 1,
542 mgf_mask( buf + hlen + 1, ilen - hlen - 1, buf + 1, hlen,
549 if( memcmp( lhash, p, hlen ) != 0 )
554 while( *p == 0 && p < buf + ilen )
557 if( p == buf + ilen )
571 if (ilen - (p - buf) > output_max_len)
574 *olen = ilen - (p - buf);
575 memcpy( output, p, *olen );
584 int (*f_rng)(
void *,
unsigned char *,
size_t),
588 unsigned int hashlen,
589 const unsigned char *hash,
593 unsigned char *p = sig;
594 #if defined(POLARSSL_PKCS1_V21)
596 unsigned int slen, hlen, offset = 0;
615 nb_pad = olen - 3 - hashlen;
621 nb_pad = olen - 3 - 34;
625 nb_pad = olen - 3 - 35;
629 nb_pad = olen - 3 - 47;
633 nb_pad = olen - 3 - 51;
637 nb_pad = olen - 3 - 67;
641 nb_pad = olen - 3 - 83;
654 memset( p, 0xFF, nb_pad );
661 memcpy( p, hash, hashlen );
666 memcpy( p + 18, hash, 16 );
671 memcpy( p + 18, hash, 16 );
676 memcpy( p + 18, hash, 16 );
681 memcpy( p + 15, hash, 20 );
686 memcpy( p + 19, hash, 28 );
687 p[1] += 28; p[14] = 4; p[18] += 28;
break;
691 memcpy( p + 19, hash, 32 );
692 p[1] += 32; p[14] = 1; p[18] += 32;
break;
696 memcpy( p + 19, hash, 48 );
697 p[1] += 48; p[14] = 2; p[18] += 48;
break;
701 memcpy( p + 19, hash, 64 );
702 p[1] += 64; p[14] = 3; p[18] += 64;
break;
710 #if defined(POLARSSL_PKCS1_V21)
749 if( md_info == NULL )
755 memset( sig, 0, olen );
764 if( ( ret = f_rng( p_rng, salt, slen ) ) != 0 )
770 p += olen - hlen * 2 - 2;
772 memcpy( p, salt, slen );
790 mgf_mask( sig + offset, olen - hlen - 1 - offset, p, hlen, &md_ctx );
793 sig[0] &= 0xFF >> ( olen * 8 - msb );
816 unsigned int hashlen,
817 const unsigned char *hash,
823 unsigned char buf[1024];
824 #if defined(POLARSSL_PKCS1_V21)
826 unsigned char zeros[8];
834 if( siglen < 16 || siglen >
sizeof( buf ) )
855 if( p >= buf + siglen - 1 || *p != 0xFF )
861 len = siglen - ( p - buf );
875 if( memcmp( p + 18, hash, 16 ) == 0 )
885 memcmp( p + 15, hash, 20 ) == 0 )
890 if( ( len == 19 + 28 && p[14] == 4 && hash_id ==
SIG_RSA_SHA224 ) ||
901 memcmp( p + 19, hash, c ) == 0 )
909 if( memcmp( p, hash, hashlen ) == 0 )
917 #if defined(POLARSSL_PKCS1_V21)
920 if( buf[siglen - 1] != 0xBC )
956 if( md_info == NULL )
960 slen = siglen - hlen - 1;
963 memset( zeros, 0, 8 );
978 if( buf[0] >> ( 8 - siglen * 8 + msb ) )
981 mgf_mask( p, siglen - hlen - 1, p + siglen - hlen - 1, hlen, &md_ctx );
983 buf[0] &= 0xFF >> ( siglen * 8 - msb );
985 while( *p == 0 && p < buf + siglen )
988 if( p == buf + siglen )
1004 if( memcmp( p + slen, result, hlen ) == 0 )
1029 #if defined(POLARSSL_SELF_TEST)
1038 #define RSA_N "9292758453063D803DD603D5E777D788" \
1039 "8ED1D5BF35786190FA2F23EBC0848AEA" \
1040 "DDA92CA6C3D80B32C4D109BE0F36D6AE" \
1041 "7130B9CED7ACDF54CFC7555AC14EEBAB" \
1042 "93A89813FBF3C4F8066D2D800F7C38A8" \
1043 "1AE31942917403FF4946B0A83D3D3E05" \
1044 "EE57C6F5F5606FB5D4BC6CD34EE0801A" \
1045 "5E94BB77B07507233A0BC7BAC8F90F79"
1047 #define RSA_E "10001"
1049 #define RSA_D "24BF6185468786FDD303083D25E64EFC" \
1050 "66CA472BC44D253102F8B4A9D3BFA750" \
1051 "91386C0077937FE33FA3252D28855837" \
1052 "AE1B484A8A9A45F7EE8C0C634F99E8CD" \
1053 "DF79C5CE07EE72C7F123142198164234" \
1054 "CABB724CF78B8173B9F880FC86322407" \
1055 "AF1FEDFDDE2BEB674CA15F3E81A1521E" \
1056 "071513A1E85B5DFA031F21ECAE91A34D"
1058 #define RSA_P "C36D0EB7FCD285223CFB5AABA5BDA3D8" \
1059 "2C01CAD19EA484A87EA4377637E75500" \
1060 "FCB2005C5C7DD6EC4AC023CDA285D796" \
1061 "C3D9E75E1EFC42488BB4F1D13AC30A57"
1063 #define RSA_Q "C000DF51A7C77AE8D7C7370C1FF55B69" \
1064 "E211C2B9E5DB1ED0BF61D0D9899620F4" \
1065 "910E4168387E3C30AA1E00C339A79508" \
1066 "8452DD96A9A5EA5D9DCA68DA636032AF"
1068 #define RSA_DP "C1ACF567564274FB07A0BBAD5D26E298" \
1069 "3C94D22288ACD763FD8E5600ED4A702D" \
1070 "F84198A5F06C2E72236AE490C93F07F8" \
1071 "3CC559CD27BC2D1CA488811730BB5725"
1073 #define RSA_DQ "4959CBF6F8FEF750AEE6977C155579C7" \
1074 "D8AAEA56749EA28623272E4F7D0592AF" \
1075 "7C1F1313CAC9471B5C523BFE592F517B" \
1076 "407A1BD76C164B93DA2D32A383E58357"
1078 #define RSA_QP "9AE7FBC99546432DF71896FC239EADAE" \
1079 "F38D18D2B2F0E2DD275AA977E2BF4411" \
1080 "F5A3B2A5D33605AEBBCCBA7FEB9F2D2F" \
1081 "A74206CEC169D74BF5A8C50D6F48EA08"
1084 #define RSA_PT "\xAA\xBB\xCC\x03\x02\x01\x00\xFF\xFF\xFF\xFF\xFF" \
1085 "\x11\x22\x33\x0A\x0B\x0C\xCC\xDD\xDD\xDD\xDD\xDD"
1087 static int myrand(
void *rng_state,
unsigned char *output,
size_t len )
1091 if( rng_state != NULL )
1094 for( i = 0; i < len; ++i )
1107 unsigned char rsa_plaintext[PT_LEN];
1108 unsigned char rsa_decrypted[PT_LEN];
1109 unsigned char rsa_ciphertext[KEY_LEN];
1110 #if defined(POLARSSL_SHA1_C)
1111 unsigned char sha1sum[20];
1127 printf(
" RSA key validation: " );
1133 printf(
"failed\n" );
1139 printf(
"passed\n PKCS#1 encryption : " );
1141 memcpy( rsa_plaintext, RSA_PT, PT_LEN );
1144 rsa_plaintext, rsa_ciphertext ) != 0 )
1147 printf(
"failed\n" );
1153 printf(
"passed\n PKCS#1 decryption : " );
1156 rsa_ciphertext, rsa_decrypted,
1157 sizeof(rsa_decrypted) ) != 0 )
1160 printf(
"failed\n" );
1165 if( memcmp( rsa_decrypted, rsa_plaintext, len ) != 0 )
1168 printf(
"failed\n" );
1173 #if defined(POLARSSL_SHA1_C)
1175 printf(
"passed\n PKCS#1 data sign : " );
1177 sha1( rsa_plaintext, PT_LEN, sha1sum );
1180 sha1sum, rsa_ciphertext ) != 0 )
1183 printf(
"failed\n" );
1189 printf(
"passed\n PKCS#1 sig. verify: " );
1192 sha1sum, rsa_ciphertext ) != 0 )
1195 printf(
"failed\n" );
1201 printf(
"passed\n\n" );