Commit a9be04fa authored by manuroe's avatar manuroe
Browse files

OLMKit: Add [OLMUtility sha256:]

parent 4a2aac58
......@@ -10,6 +10,14 @@
@interface OLMUtility : NSObject
/**
Calculate the SHA-256 hash of the input and encodes it as base64.
@param message the message to hash.
@return the base64-encoded hash value.
*/
- (NSString*)sha256:(NSData*)message;
/**
Verify an ed25519 signature.
......
......@@ -50,6 +50,25 @@
return self;
}
- (NSString *)sha256:(NSData *)message {
size_t length = olm_sha256_length(_utility);
NSMutableData *shaData = [NSMutableData dataWithLength:length];
if (!shaData) {
return nil;
}
size_t result = olm_sha256(_utility, message.bytes, message.length, shaData.mutableBytes, shaData.length);
if (result == olm_error()) {
const char *error = olm_utility_last_error(_utility);
NSAssert(NO, @"olm_sha256 error: %s", error);
return nil;
}
NSString *sha = [[NSString alloc] initWithData:shaData encoding:NSUTF8StringEncoding];
return sha;
}
- (BOOL)verifyEd25519Signature:(NSString*)signature key:(NSString*)key message:(NSData*)message error:(NSError**)error {
NSData *keyData = [key dataUsingEncoding:NSUTF8StringEncoding];
......@@ -61,7 +80,7 @@
signatureData.bytes, signatureData.length
);
if (result < 0 || result == (size_t)-1) {
if (result == olm_error()) {
if (error) {
NSDictionary *userInfo = @{NSLocalizedFailureReasonErrorKey: [NSString stringWithUTF8String:olm_utility_last_error(_utility)]};
......
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