Hello all
Well, I've been going through my personal hell these days
I am having some trouble decrypting a message that was encrypted using
RSA and I'm always failing with a "RSA/OAEP-MGF1(SHA-1): invalid
ciphertext"
1. I have a private key encoded in base64 and I load it:
RSA::PrivateKey private_key;
StringSource file_pk(PK,true,new Base64Decoder);
private_key.Load( file_pk );
2. I then proceed to decode the message by doing:
RSAES_OAEP_SHA_Decryptor decryptor(private_key);
AutoSeededRandomPool rng;
string result;
StringSource(ciphertext, true,
new PK_DecryptorFilter(rng, decryptor,
new StringSink(result)
)
);
Before doing this step the message has already been decoded from
base64, that's why there is no Base64Decoder filter before the
PK_DecryptorFilter.
As far as I can tell, the message should be being parsed without any
problems. ciphertext is an std::string, so no \0 at the end that could
do something unexpected.
I just though of something, and what if the private key is incorrect
but can be loaded anyway without throwing a BER decode error. What
would that throw when decrypting?
Hope that anyone can shed some light on this.
Cheers
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