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Fix bug in RSA code.

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jakcron
2022-04-17 09:52:04 +08:00
parent d797687761
commit e6a009fc72
1 changed files with 1 additions and 24 deletions
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makerom/src/crypto.c
+1 -24
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@@ -4,8 +4,6 @@
#include <mbedtls/aes.h> #include <mbedtls/aes.h>
#include <mbedtls/rsa.h> #include <mbedtls/rsa.h>
#include <mbedtls/md.h> #include <mbedtls/md.h>
#include <mbedtls/entropy.h>
#include <mbedtls/ctr_drbg.h>
#include <mbedtls/sha1.h> #include <mbedtls/sha1.h>
#include <mbedtls/sha256.h> #include <mbedtls/sha256.h>
@@ -199,32 +197,11 @@ int RsaSignVerify(void *data, u64 len, u8 *sign, u8 *mod, u8 *priv_exp, u32 sig_
if(rsa_mode == CTR_RSA_VERIFY) if(rsa_mode == CTR_RSA_VERIFY)
{ {
//rsa_result = rsa_pkcs1_verify(&ctx, RSA_PUBLIC, GetRsaHashType(sig_type), 0, hash, sign);
rsa_result = mbedtls_rsa_rsassa_pkcs1_v15_verify(&ctx, NULL, NULL, MBEDTLS_RSA_PUBLIC, getMdWrappedHashType(sig_type), GetSigHashLen(sig_type), hash, sign); rsa_result = mbedtls_rsa_rsassa_pkcs1_v15_verify(&ctx, NULL, NULL, MBEDTLS_RSA_PUBLIC, getMdWrappedHashType(sig_type), GetSigHashLen(sig_type), hash, sign);
} }
else // CTR_RSA_SIGN else // CTR_RSA_SIGN
{ {
// mbedtls API requires we init their PRBG before signing, but it isn't strictly required for the specific signture type we are generating rsa_result = mbedtls_rsa_rsassa_pkcs1_v15_sign(&ctx, NULL, NULL, MBEDTLS_RSA_PRIVATE, getMdWrappedHashType(sig_type), GetSigHashLen(sig_type), hash, sign);
mbedtls_entropy_context entropy;
mbedtls_ctr_drbg_context ctr_drbg;
mbedtls_entropy_init( &entropy );
mbedtls_ctr_drbg_init( &ctr_drbg );
// init PRBG
const char* pers = "RsaSignVerify";
rsa_result = mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func, &entropy, (const uint8_t*)pers, strlen(pers));
// if initing the PRBG succeeded we can sign
if (rsa_result == 0)
{
//rsa_result = rsa_rsassa_pkcs1_v15_sign(&ctx, RSA_PRIVATE, GetRsaHashType(sig_type), 0, hash, sign);
rsa_result = mbedtls_rsa_rsassa_pkcs1_v15_sign(&ctx, mbedtls_ctr_drbg_random, &ctr_drbg, MBEDTLS_RSA_PRIVATE, getMdWrappedHashType(sig_type), GetSigHashLen(sig_type), hash, sign);
}
mbedtls_ctr_drbg_free( &ctr_drbg );
mbedtls_entropy_free( &entropy );
} }