Cifrado AES ECB iOS
Intento encriptar alguna cadena usando el algoritmo AES con la opción ECB.
size_t bufferSize = dataLength + kCCBlockSizeAES128;
void *buffer = malloc(bufferSize);
size_t numBytesEncrypted = 0;
CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt, kCCAlgorithmAES128, kCCOptionECBMode,
encryptionKey, kCCKeySizeAES128,
NULL /* initialization vector (optional) */,
[self bytes], dataLength, /* input */
buffer, bufferSize, /* output */
&numBytesEncrypted);
if (cryptStatus == kCCSuccess) {
return [NSData dataWithBytesNoCopy:buffer length:numBytesEncrypted];
}
Pero func devuelve kCCAlignmentError (-4303)
Luego trato de alinear los datos:
unsigned long diff = kCCKeySizeAES128 - (dataLength % kCCKeySizeAES128);
unsigned long newSize = 0;
if (diff > 0) {
newSize = dataLength + diff;
}
char dataPtr[newSize];
memcpy(dataPtr, [self bytes], [self length]);
for(int i = 0; i < diff; i++) {
dataPtr[i + dataLength] = 0x20;
}
size_t numBytesEncrypted = 0;
CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt, kCCAlgorithmAES128, kCCOptionECBMode,
encryptionKey, kCCKeySizeAES128,
NULL /* initialization vector (optional) */,
dataPtr, sizeof(dataPtr), /* input */
buffer, bufferSize, /* output */
&numBytesEncrypted);
cadena de entrada
"test_string,test2"
el resultado es
jxtFOhYpgBVieM90zx9oDanqBkcsVAvRRJsM4GL3cio=
En Android el resultado es
jxtFOhYpgBVieM90zx9oDUfV7v43WFv7F5bzErfxrL8=
¿Qué hice mal?