1/* SPDX-License-Identifier: GPL-2.0+ */ 2/* 3 * Copyright (c) 2020, Alexandru Gagniuc <mr.nuke.me@gmail.com> 4 */ 5 6#include <dm/device.h> 7 8/** 9 * struct ecdsa_public_key - ECDSA public key properties 10 * 11 * The struct has pointers to the (x, y) curve coordinates to an ECDSA public 12 * key, as well as the name of the ECDSA curve. The size of the key is inferred 13 * from the 'curve_name' 14 */ 15struct ecdsa_public_key { 16 const char *curve_name; /* Name of curve, e.g. "prime256v1" */ 17 const void *x; /* x coordinate of public key */ 18 const void *y; /* y coordinate of public key */ 19 unsigned int size_bits; /* key size in bits, derived from curve name */ 20}; 21 22struct ecdsa_ops { 23 /** 24 * Verify signature of hash against given public key 25 * 26 * @dev: ECDSA Device 27 * @pubkey: ECDSA public key 28 * @hash: Hash of binary image 29 * @hash_len: Length of hash in bytes 30 * @signature: Signature in a raw (R, S) point pair 31 * @sig_len: Length of signature in bytes 32 * 33 * This function verifies that the 'signature' of the given 'hash' was 34 * signed by the private key corresponding to 'pubkey'. 35 */ 36 int (*verify)(struct udevice *dev, const struct ecdsa_public_key *pubkey, 37 const void *hash, size_t hash_len, 38 const void *signature, size_t sig_len); 39}; 40