Notified by Stella Power <snpower@maths.tcd.ie>.
PR: 24
EVP_DecryptFinal_ex() returns 0 if the decrypt failed or 1 for success.
EVP_CipherInit_ex() and EVP_CipherUpdate() return 1 for success and 0 for failure.
EVP_DecryptFinal_ex() returns 0 if the decrypt failed or 1 for success.
EVP_CipherInit_ex() and EVP_CipherUpdate() return 1 for success and 0 for failure.
-EVP_CipherFinal_ex() returns 1 for a decryption failure or 1 for success.
+EVP_CipherFinal_ex() returns 0 for a decryption failure or 1 for success.
EVP_CIPHER_CTX_cleanup() returns 1 for success and 0 for failure.
EVP_CIPHER_CTX_cleanup() returns 1 for success and 0 for failure.