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Reformatted for better error handling

yamux
John Jones 2017-04-27 15:51:30 -05:00
parent 9caba0aa00
commit 910e84dd5c
1 changed files with 16 additions and 16 deletions
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32
crypto/rsa.c
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@ -127,7 +127,7 @@ int libp2p_crypto_rsa_generate_keypair(struct RsaPrivateKey* private_key, unsign
mbedtls_ctr_drbg_context ctr_drbg;
int exponent = 65537;
int retVal = 1;
int retVal = 0;
unsigned char* buffer;
@ -142,7 +142,6 @@ int libp2p_crypto_rsa_generate_keypair(struct RsaPrivateKey* private_key, unsign
(const unsigned char *) pers,
strlen( pers ) ) ) != 0 )
{
retVal = 0;
goto exit;
}
@ -150,13 +149,11 @@ int libp2p_crypto_rsa_generate_keypair(struct RsaPrivateKey* private_key, unsign
mbedtls_rsa_init( &rsa, MBEDTLS_RSA_PKCS_V15, 0 );
// finally, generate the key
if( ( retVal = mbedtls_rsa_gen_key( &rsa, mbedtls_ctr_drbg_random, &ctr_drbg, (unsigned int)num_bits_for_keypair,
exponent ) ) != 0 )
if( mbedtls_rsa_gen_key( &rsa, mbedtls_ctr_drbg_random, &ctr_drbg, (unsigned int)num_bits_for_keypair,
exponent ) != 0 )
{
retVal = 0;
goto exit;
}
retVal = 1;
// fill in values of structures
private_key->D = *(rsa.D.p);
@ -170,9 +167,8 @@ int libp2p_crypto_rsa_generate_keypair(struct RsaPrivateKey* private_key, unsign
size_t buffer_size = 1600;
buffer = malloc(sizeof(char) * buffer_size);
retVal = libp2p_crypto_rsa_write_private_key_der(&rsa, buffer, &buffer_size);
if (retVal == 0)
return 0;
if (!libp2p_crypto_rsa_write_private_key_der(&rsa, buffer, &buffer_size))
goto exit;
// allocate memory for the private key der
private_key->der_length = buffer_size;
@ -180,16 +176,20 @@ int libp2p_crypto_rsa_generate_keypair(struct RsaPrivateKey* private_key, unsign
// add in the der to the buffer
memcpy(private_key->der, &buffer[1600-buffer_size], buffer_size);
exit:
if (buffer != NULL)
free(buffer);
if (!libp2p_crypto_rsa_private_key_fill_public_key(private_key))
goto exit;
retVal = 1;
exit:
mbedtls_rsa_free( &rsa );
mbedtls_ctr_drbg_free( &ctr_drbg );
mbedtls_entropy_free( &entropy );
if (retVal != 0) {
// now do the public key.
retVal = libp2p_crypto_rsa_private_key_fill_public_key(private_key);
if (buffer != NULL)
free(buffer);
if (retVal == 0) {
// anything allocated should be cleaned up, as we're erroring out
libp2p_crypto_rsa_rsa_private_key_free(private_key);
private_key = NULL;
}
return retVal;