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instance method
OpenSSL::Cipher#key_len=
cipher.key_len = integer → integer
ext/openssl/ossl_cipher.c
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static VALUE
ossl_cipher_set_key_length(VALUE self, VALUE key_length)
{
int len = NUM2INT(key_length);
EVP_CIPHER_CTX *ctx;
GetCipher(self, ctx);
if (EVP_CIPHER_CTX_set_key_length(ctx, len) != 1)
ossl_raise(eCipherError, NULL);
return key_length;
}
Sets the key length of the cipher. If the cipher is a fixed length cipher then attempting to set the key length to any value other than the fixed value is an error.
Under normal circumstances you do not need to call this method (and probably shouldn’t).
See EVP_CIPHER_CTX_set_key_length for further information.