Update EVP_CIPHER_CTX_set_padding documentation.

value is an internal value which may not have a corresponding OBJECT

value is an internal value which may not have a corresponding OBJECT

IDENTIFIER.

IDENTIFIER.

EVP_CIPHER_CTX_set_padding() enables or disables padding. By default

EVP_CIPHER_CTX_set_padding() enables or disables padding. This

encryption operations are padded using standard block padding and the

function should be called after the context is set up for encryption

padding is checked and removed when decrypting. If the B<pad> parameter

or decryption with EVP_EncryptInit_ex(), EVP_DecryptInit_ex() or

is zero then no padding is performed, the total amount of data encrypted

EVP_CipherInit_ex(). By default encryption operations are padded using

or decrypted must then be a multiple of the block size or an error will

standard block padding and the padding is checked and removed when

occur.

decrypting. If the B<pad> parameter is zero then no padding is

performed, the total amount of data encrypted or decrypted must then

be a multiple of the block size or an error will occur.

EVP_CIPHER_key_length() and EVP_CIPHER_CTX_key_length() return the key

EVP_CIPHER_key_length() and EVP_CIPHER_CTX_key_length() return the key

length of a cipher when passed an B<EVP_CIPHER> or B<EVP_CIPHER_CTX>

length of a cipher when passed an B<EVP_CIPHER> or B<EVP_CIPHER_CTX>