skylab/MasterPassword
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Improved logging of password generation.

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[IMPROVED]  Trace-level logging during password generation.
This commit is contained in:
Maarten Billemont 2012-07-05 13:47:50 +02:00
parent 04a6c8e68d
commit 8b997528c9
1 changed files with 8 additions and 6 deletions
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14
MasterPassword/MPTypes.m
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@ -27,7 +27,7 @@ NSData *keyForPassword(NSString *password, NSString *username) {
[username dataUsingEncoding:NSUTF8StringEncoding], [username dataUsingEncoding:NSUTF8StringEncoding],
nil] N:MP_N r:MP_r p:MP_p]; nil] N:MP_N r:MP_r p:MP_p];
trc(@"User: %@, password: %@ derives to key ID: %@ (took %0.2f)", username, password, [keyIDForKey(key) encodeHex], -[start timeIntervalSinceNow]); trc(@"User: %@, password: %@ derives to key ID: %@ (took %0.2fs)", username, password, [keyIDForKey(key) encodeHex], -[start timeIntervalSinceNow]);
return key; return key;
} }
@ -184,16 +184,18 @@ NSString *MPCalculateContent(MPElementType type, NSString *name, NSData *key, ui
withExtension:@"plist"]]; withExtension:@"plist"]];
// Determine the seed whose bytes will be used for calculating a password // Determine the seed whose bytes will be used for calculating a password
trc(@"seed from: hmac-sha256(%@, 'com.lyndir.masterpassword' | %u | %@ | %u)", key, name.length, name, counter);
uint32_t ncounter = htonl(counter), nnameLength = htonl(name.length); uint32_t ncounter = htonl(counter), nnameLength = htonl(name.length);
NSData *counterBytes = [NSData dataWithBytes:&ncounter length:sizeof(ncounter)];
NSData *nameLengthBytes = [NSData dataWithBytes:&nnameLength length:sizeof(nnameLength)];
trc(@"seed from: hmac-sha256(%@, 'com.lyndir.masterpassword' | %@ | %@ | %@)", [key encodeBase64], [nameLengthBytes encodeHex], name, [counterBytes encodeHex]);
NSData *seed = [[NSData dataByConcatenatingDatas: NSData *seed = [[NSData dataByConcatenatingDatas:
[@"com.lyndir.masterpassword" dataUsingEncoding:NSUTF8StringEncoding], [@"com.lyndir.masterpassword" dataUsingEncoding:NSUTF8StringEncoding],
[NSData dataWithBytes:&nnameLength length:sizeof(nnameLength)], nameLengthBytes,
[name dataUsingEncoding:NSUTF8StringEncoding], [name dataUsingEncoding:NSUTF8StringEncoding],
[NSData dataWithBytes:&ncounter length:sizeof(ncounter)], counterBytes,
nil] nil]
hmacWith:PearlHashSHA256 key:key]; hmacWith:PearlHashSHA256 key:key];
trc(@"seed is: %@", seed); trc(@"seed is: %@", [seed encodeBase64]);
const char *seedBytes = seed.bytes; const char *seedBytes = seed.bytes;
// Determine the cipher from the first seed byte. // Determine the cipher from the first seed byte.
@ -213,7 +215,7 @@ NSString *MPCalculateContent(MPElementType type, NSString *name, NSData *key, ui
NSString *character = [cipherClassCharacters substringWithRange:NSMakeRange(keyByte % [cipherClassCharacters length], NSString *character = [cipherClassCharacters substringWithRange:NSMakeRange(keyByte % [cipherClassCharacters length],
1)]; 1)];
trc(@"class %@ has characters: %@, selected: %@", cipherClass, cipherClassCharacters, character); trc(@"class %@ has characters: %@, index: %u, selected: %@", cipherClass, cipherClassCharacters, keyByte, character);
[content appendString:character]; [content appendString:character];
} }