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Fix a memory leak in tor-gencert.
This way I can run chutney under asan. Fixes part of 18672.
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@ -402,6 +402,7 @@ key_to_string(EVP_PKEY *key)
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b = BIO_new(BIO_s_mem());
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if (!PEM_write_bio_RSAPublicKey(b, rsa)) {
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crypto_log_errors(LOG_WARN, "writing public key to string");
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RSA_free(rsa);
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return NULL;
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}
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@ -413,6 +414,7 @@ key_to_string(EVP_PKEY *key)
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result[buf->length] = 0;
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BUF_MEM_free(buf);
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RSA_free(rsa);
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return result;
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}
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@ -488,10 +490,13 @@ generate_certificate(void)
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tor_free(signing);
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/* Append a cross-certification */
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RSA *rsa = EVP_PKEY_get1_RSA(signing_key);
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r = RSA_private_encrypt(DIGEST_LEN, (unsigned char*)id_digest,
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(unsigned char*)signature,
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EVP_PKEY_get1_RSA(signing_key),
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rsa,
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RSA_PKCS1_PADDING);
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RSA_free(rsa);
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signed_len = strlen(buf);
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base64_encode(buf+signed_len, sizeof(buf)-signed_len, signature, r,
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BASE64_ENCODE_MULTILINE);
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@ -503,10 +508,12 @@ generate_certificate(void)
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signed_len = strlen(buf);
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SHA1((const unsigned char*)buf,signed_len,(unsigned char*)digest);
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rsa = EVP_PKEY_get1_RSA(identity_key);
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r = RSA_private_encrypt(DIGEST_LEN, (unsigned char*)digest,
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(unsigned char*)signature,
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EVP_PKEY_get1_RSA(identity_key),
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rsa,
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RSA_PKCS1_PADDING);
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RSA_free(rsa);
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strlcat(buf, "-----BEGIN SIGNATURE-----\n", sizeof(buf));
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signed_len = strlen(buf);
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base64_encode(buf+signed_len, sizeof(buf)-signed_len, signature, r,
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