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;
393 while( nb_pad-- > 0 )
398 ret = f_rng( p_rng, p, 1 );
399 }
while( *p == 0 && --rng_dl && ret == 0 );
403 if( rng_dl == 0 || ret != 0)
413 while( nb_pad-- > 0 )
418 memcpy( p, input, ilen );
421 #if defined(POLARSSL_PKCS1_V21)
425 if( md_info == NULL )
430 if( olen < ilen + 2 * hlen + 2 || f_rng == NULL )
433 memset( output, 0, olen );
439 if( ( ret = f_rng( p_rng, p, hlen ) ) != 0 )
446 md( md_info, p, 0, p );
448 p += olen - 2 * hlen - 2 - ilen;
450 memcpy( p, input, ilen );
456 mgf_mask( output + hlen + 1, olen - hlen - 1, output + 1, hlen,
461 mgf_mask( output + 1, hlen, output + hlen + 1, olen - hlen - 1,
482 int mode,
size_t *olen,
483 const unsigned char *input,
484 unsigned char *output,
485 size_t output_max_len)
491 unsigned char buf[1024];
492 #if defined(POLARSSL_PKCS1_V21)
501 if( ilen < 16 || ilen >
sizeof( buf ) )
529 while( *p != 0 && p < buf + ilen - 1 )
532 if( *p != 0 || p >= buf + ilen - 1 )
539 while( *p == 0xFF && p < buf + ilen - 1 )
542 if( *p != 0 || p >= buf + ilen - 1 )
550 #if defined(POLARSSL_PKCS1_V21)
557 if( md_info == NULL )
566 md( md_info, lhash, 0, lhash );
570 mgf_mask( buf + 1, hlen, buf + hlen + 1, ilen - hlen - 1,
575 mgf_mask( buf + hlen + 1, ilen - hlen - 1, buf + 1, hlen,
583 if( memcmp( lhash, p, hlen ) != 0 )
588 while( *p == 0 && p < buf + ilen )
591 if( p == buf + ilen )
605 if (ilen - (p - buf) > output_max_len)
608 *olen = ilen - (p - buf);
609 memcpy( output, p, *olen );
618 int (*f_rng)(
void *,
unsigned char *,
size_t),
622 unsigned int hashlen,
623 const unsigned char *hash,
627 unsigned char *p = sig;
628 #if defined(POLARSSL_PKCS1_V21)
630 unsigned int slen, hlen, offset = 0;
649 nb_pad = olen - 3 - hashlen;
655 nb_pad = olen - 3 - 34;
659 nb_pad = olen - 3 - 35;
663 nb_pad = olen - 3 - 47;
667 nb_pad = olen - 3 - 51;
671 nb_pad = olen - 3 - 67;
675 nb_pad = olen - 3 - 83;
683 if( ( nb_pad < 8 ) || ( nb_pad > olen ) )
688 memset( p, 0xFF, nb_pad );
695 memcpy( p, hash, hashlen );
700 memcpy( p + 18, hash, 16 );
705 memcpy( p + 18, hash, 16 );
710 memcpy( p + 18, hash, 16 );
715 memcpy( p + 15, hash, 20 );
720 memcpy( p + 19, hash, 28 );
721 p[1] += 28; p[14] = 4; p[18] += 28;
break;
725 memcpy( p + 19, hash, 32 );
726 p[1] += 32; p[14] = 1; p[18] += 32;
break;
730 memcpy( p + 19, hash, 48 );
731 p[1] += 48; p[14] = 2; p[18] += 48;
break;
735 memcpy( p + 19, hash, 64 );
736 p[1] += 64; p[14] = 3; p[18] += 64;
break;
744 #if defined(POLARSSL_PKCS1_V21)
783 if( md_info == NULL )
789 if( olen < hlen + slen + 2 )
792 memset( sig, 0, olen );
798 if( ( ret = f_rng( p_rng, salt, slen ) ) != 0 )
804 p += olen - hlen * 2 - 2;
806 memcpy( p, salt, slen );
826 mgf_mask( sig + offset, olen - hlen - 1 - offset, p, hlen, &md_ctx );
831 sig[0] &= 0xFF >> ( olen * 8 - msb );
854 unsigned int hashlen,
855 const unsigned char *hash,
861 unsigned char buf[1024];
862 #if defined(POLARSSL_PKCS1_V21)
864 unsigned char zeros[8];
872 if( siglen < 16 || siglen >
sizeof( buf ) )
893 if( p >= buf + siglen - 1 || *p != 0xFF )
899 len = siglen - ( p - buf );
913 if( memcmp( p + 18, hash, 16 ) == 0 )
923 memcmp( p + 15, hash, 20 ) == 0 )
928 if( ( len == 19 + 28 && p[14] == 4 && hash_id ==
SIG_RSA_SHA224 ) ||
939 memcmp( p + 19, hash, c ) == 0 )
947 if( memcmp( p, hash, hashlen ) == 0 )
955 #if defined(POLARSSL_PKCS1_V21)
958 if( buf[siglen - 1] != 0xBC )
994 if( md_info == NULL )
998 slen = siglen - hlen - 1;
1000 memset( zeros, 0, 8 );
1013 if( buf[0] >> ( 8 - siglen * 8 + msb ) )
1018 mgf_mask( p, siglen - hlen - 1, p + siglen - hlen - 1, hlen, &md_ctx );
1020 buf[0] &= 0xFF >> ( siglen * 8 - msb );
1022 while( *p == 0 && p < buf + siglen )
1025 if( p == buf + siglen ||
1044 if( memcmp( p + slen, result, hlen ) == 0 )
1069 #if defined(POLARSSL_SELF_TEST)
1078 #define RSA_N "9292758453063D803DD603D5E777D788" \
1079 "8ED1D5BF35786190FA2F23EBC0848AEA" \
1080 "DDA92CA6C3D80B32C4D109BE0F36D6AE" \
1081 "7130B9CED7ACDF54CFC7555AC14EEBAB" \
1082 "93A89813FBF3C4F8066D2D800F7C38A8" \
1083 "1AE31942917403FF4946B0A83D3D3E05" \
1084 "EE57C6F5F5606FB5D4BC6CD34EE0801A" \
1085 "5E94BB77B07507233A0BC7BAC8F90F79"
1087 #define RSA_E "10001"
1089 #define RSA_D "24BF6185468786FDD303083D25E64EFC" \
1090 "66CA472BC44D253102F8B4A9D3BFA750" \
1091 "91386C0077937FE33FA3252D28855837" \
1092 "AE1B484A8A9A45F7EE8C0C634F99E8CD" \
1093 "DF79C5CE07EE72C7F123142198164234" \
1094 "CABB724CF78B8173B9F880FC86322407" \
1095 "AF1FEDFDDE2BEB674CA15F3E81A1521E" \
1096 "071513A1E85B5DFA031F21ECAE91A34D"
1098 #define RSA_P "C36D0EB7FCD285223CFB5AABA5BDA3D8" \
1099 "2C01CAD19EA484A87EA4377637E75500" \
1100 "FCB2005C5C7DD6EC4AC023CDA285D796" \
1101 "C3D9E75E1EFC42488BB4F1D13AC30A57"
1103 #define RSA_Q "C000DF51A7C77AE8D7C7370C1FF55B69" \
1104 "E211C2B9E5DB1ED0BF61D0D9899620F4" \
1105 "910E4168387E3C30AA1E00C339A79508" \
1106 "8452DD96A9A5EA5D9DCA68DA636032AF"
1108 #define RSA_DP "C1ACF567564274FB07A0BBAD5D26E298" \
1109 "3C94D22288ACD763FD8E5600ED4A702D" \
1110 "F84198A5F06C2E72236AE490C93F07F8" \
1111 "3CC559CD27BC2D1CA488811730BB5725"
1113 #define RSA_DQ "4959CBF6F8FEF750AEE6977C155579C7" \
1114 "D8AAEA56749EA28623272E4F7D0592AF" \
1115 "7C1F1313CAC9471B5C523BFE592F517B" \
1116 "407A1BD76C164B93DA2D32A383E58357"
1118 #define RSA_QP "9AE7FBC99546432DF71896FC239EADAE" \
1119 "F38D18D2B2F0E2DD275AA977E2BF4411" \
1120 "F5A3B2A5D33605AEBBCCBA7FEB9F2D2F" \
1121 "A74206CEC169D74BF5A8C50D6F48EA08"
1124 #define RSA_PT "\xAA\xBB\xCC\x03\x02\x01\x00\xFF\xFF\xFF\xFF\xFF" \
1125 "\x11\x22\x33\x0A\x0B\x0C\xCC\xDD\xDD\xDD\xDD\xDD"
1127 static int myrand(
void *rng_state,
unsigned char *output,
size_t len )
1131 if( rng_state != NULL )
1134 for( i = 0; i < len; ++i )
1147 unsigned char rsa_plaintext[PT_LEN];
1148 unsigned char rsa_decrypted[PT_LEN];
1149 unsigned char rsa_ciphertext[KEY_LEN];
1150 #if defined(POLARSSL_SHA1_C)
1151 unsigned char sha1sum[20];
1167 printf(
" RSA key validation: " );
1173 printf(
"failed\n" );
1179 printf(
"passed\n PKCS#1 encryption : " );
1181 memcpy( rsa_plaintext, RSA_PT, PT_LEN );
1184 rsa_plaintext, rsa_ciphertext ) != 0 )
1187 printf(
"failed\n" );
1193 printf(
"passed\n PKCS#1 decryption : " );
1196 rsa_ciphertext, rsa_decrypted,
1197 sizeof(rsa_decrypted) ) != 0 )
1200 printf(
"failed\n" );
1205 if( memcmp( rsa_decrypted, rsa_plaintext, len ) != 0 )
1208 printf(
"failed\n" );
1213 #if defined(POLARSSL_SHA1_C)
1215 printf(
"passed\n PKCS#1 data sign : " );
1217 sha1( rsa_plaintext, PT_LEN, sha1sum );
1220 sha1sum, rsa_ciphertext ) != 0 )
1223 printf(
"failed\n" );
1229 printf(
"passed\n PKCS#1 sig. verify: " );
1232 sha1sum, rsa_ciphertext ) != 0 )
1235 printf(
"failed\n" );
1241 printf(
"passed\n\n" );