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Avoid directly accessing internals of ASN1_BIT_STRING

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Cameron Gutman
2026-03-28 13:57:22 -05:00
parent 7754442873
commit ab9999c7a3
1 changed files with 5 additions and 5 deletions
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10
libgamestream/client.c
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@@ -541,17 +541,17 @@ int gs_pair(PSERVER_DATA server, char* pin) {
const ASN1_BIT_STRING *asnSignature;
X509_get0_signature(&asnSignature, NULL, cert);
challenge_response = malloc(16 + asnSignature->length + sizeof(client_secret_data));
challenge_response = malloc(16 + ASN1_STRING_length(asnSignature) + sizeof(client_secret_data));
char challenge_response_hash[32];
char challenge_response_hash_enc[sizeof(challenge_response_hash)];
char challenge_response_hex[SIZEOF_AS_HEX_STR(challenge_response_hash_enc)];
memcpy(challenge_response, challenge_response_data + hash_length, 16);
memcpy(challenge_response + 16, asnSignature->data, asnSignature->length);
memcpy(challenge_response + 16 + asnSignature->length, client_secret_data, sizeof(client_secret_data));
memcpy(challenge_response + 16, ASN1_STRING_get0_data(asnSignature), ASN1_STRING_length(asnSignature));
memcpy(challenge_response + 16 + ASN1_STRING_length(asnSignature), client_secret_data, sizeof(client_secret_data));
if (server->serverMajorVersion >= 7)
SHA256(challenge_response, 16 + asnSignature->length + sizeof(client_secret_data), challenge_response_hash);
SHA256(challenge_response, 16 + ASN1_STRING_length(asnSignature) + sizeof(client_secret_data), challenge_response_hash);
else
SHA1(challenge_response, 16 + asnSignature->length + sizeof(client_secret_data), challenge_response_hash);
SHA1(challenge_response, 16 + ASN1_STRING_length(asnSignature) + sizeof(client_secret_data), challenge_response_hash);
encrypt(challenge_response_hash, sizeof(challenge_response_hash), aes_key, challenge_response_hash_enc);
bytes_to_hex(challenge_response_hash_enc, challenge_response_hex, sizeof(challenge_response_hash_enc));