krb5int_dk_decrypt
krb5_error_code krb5int_dk_decrypt(const struct krb5_keytypes *ktp,
krb5int_aes_crypto_length, krb5int_dk_encrypt, krb5int_dk_decrypt,
krb5int_dk_crypto_length, krb5int_dk_encrypt, krb5int_dk_decrypt,
krb5int_aes_crypto_length, krb5int_dk_encrypt, krb5int_dk_decrypt,