diff options
Diffstat (limited to 'crypto/rsa/rsa_eay.c')
| -rw-r--r-- | crypto/rsa/rsa_eay.c | 41 |
1 files changed, 14 insertions, 27 deletions
diff --git a/crypto/rsa/rsa_eay.c b/crypto/rsa/rsa_eay.c index b147fff8bd60..7ba24e362c56 100644 --- a/crypto/rsa/rsa_eay.c +++ b/crypto/rsa/rsa_eay.c @@ -56,7 +56,7 @@ * [including the GNU Public Licence.] */ /* ==================================================================== - * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. + * Copyright (c) 1998-2018 The OpenSSL Project. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -114,6 +114,7 @@ #include <openssl/bn.h> #include <openssl/rsa.h> #include <openssl/rand.h> +#include "bn_int.h" #ifndef RSA_NULL @@ -156,7 +157,7 @@ static int RSA_eay_public_encrypt(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding) { BIGNUM *f, *ret; - int i, j, k, num = 0, r = -1; + int i, num = 0, r = -1; unsigned char *buf = NULL; BN_CTX *ctx = NULL; @@ -232,15 +233,10 @@ static int RSA_eay_public_encrypt(int flen, const unsigned char *from, goto err; /* - * put in leading 0 bytes if the number is less than the length of the - * modulus + * BN_bn2binpad puts in leading 0 bytes if the number is less than + * the length of the modulus. */ - j = BN_num_bytes(ret); - i = BN_bn2bin(ret, &(to[num - j])); - for (k = 0; k < (num - i); k++) - to[k] = 0; - - r = num; + r = bn_bn2binpad(ret, to, num); err: if (ctx != NULL) { BN_CTX_end(ctx); @@ -349,7 +345,7 @@ static int RSA_eay_private_encrypt(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding) { BIGNUM *f, *ret, *res; - int i, j, k, num = 0, r = -1; + int i, num = 0, r = -1; unsigned char *buf = NULL; BN_CTX *ctx = NULL; int local_blinding = 0; @@ -459,15 +455,10 @@ static int RSA_eay_private_encrypt(int flen, const unsigned char *from, res = ret; /* - * put in leading 0 bytes if the number is less than the length of the - * modulus + * BN_bn2binpad puts in leading 0 bytes if the number is less than + * the length of the modulus. */ - j = BN_num_bytes(res); - i = BN_bn2bin(res, &(to[num - j])); - for (k = 0; k < (num - i); k++) - to[k] = 0; - - r = num; + r = bn_bn2binpad(res, to, num); err: if (ctx != NULL) { BN_CTX_end(ctx); @@ -485,7 +476,6 @@ static int RSA_eay_private_decrypt(int flen, const unsigned char *from, { BIGNUM *f, *ret; int j, num = 0, r = -1; - unsigned char *p; unsigned char *buf = NULL; BN_CTX *ctx = NULL; int local_blinding = 0; @@ -576,8 +566,7 @@ static int RSA_eay_private_decrypt(int flen, const unsigned char *from, if (!rsa_blinding_invert(blinding, ret, unblind, ctx)) goto err; - p = buf; - j = BN_bn2bin(ret, p); /* j is only used with no-padding mode */ + j = bn_bn2binpad(ret, buf, num); switch (padding) { case RSA_PKCS1_PADDING: @@ -592,7 +581,7 @@ static int RSA_eay_private_decrypt(int flen, const unsigned char *from, r = RSA_padding_check_SSLv23(to, num, buf, j, num); break; case RSA_NO_PADDING: - r = RSA_padding_check_none(to, num, buf, j, num); + memcpy(to, buf, (r = j)); break; default: RSAerr(RSA_F_RSA_EAY_PRIVATE_DECRYPT, RSA_R_UNKNOWN_PADDING_TYPE); @@ -619,7 +608,6 @@ static int RSA_eay_public_decrypt(int flen, const unsigned char *from, { BIGNUM *f, *ret; int i, num = 0, r = -1; - unsigned char *p; unsigned char *buf = NULL; BN_CTX *ctx = NULL; @@ -684,8 +672,7 @@ static int RSA_eay_public_decrypt(int flen, const unsigned char *from, if (!BN_sub(ret, rsa->n, ret)) goto err; - p = buf; - i = BN_bn2bin(ret, p); + i = bn_bn2binpad(ret, buf, num); switch (padding) { case RSA_PKCS1_PADDING: @@ -695,7 +682,7 @@ static int RSA_eay_public_decrypt(int flen, const unsigned char *from, r = RSA_padding_check_X931(to, num, buf, i, num); break; case RSA_NO_PADDING: - r = RSA_padding_check_none(to, num, buf, i, num); + memcpy(to, buf, (r = i)); break; default: RSAerr(RSA_F_RSA_EAY_PUBLIC_DECRYPT, RSA_R_UNKNOWN_PADDING_TYPE); |