On Fri, 25 Feb 2005 12:11:39 +0100, Madelman said: > gcry_cipher_open(&hd, GCRY_CIPHER_AES, GCRY_CIPHER_MODE_ECB, 0); ECB? Not sure that has ever been tested. Better send plaintext than using ECB. > If I understood it correctly in ECB mode I don't need to set the IV, but even if There is no chaining at all with ECB thus no IV. Don't use it. Werner