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- // SPDX-License-Identifier: GPL-2.0-only
- /* Copyright (c) 2024 Meta, Inc */
- #include <linux/types.h>
- #include <linux/module.h>
- #include <linux/bpf_crypto.h>
- #include <crypto/skcipher.h>
- static void *bpf_crypto_lskcipher_alloc_tfm(const char *algo)
- {
- return crypto_alloc_lskcipher(algo, 0, 0);
- }
- static void bpf_crypto_lskcipher_free_tfm(void *tfm)
- {
- crypto_free_lskcipher(tfm);
- }
- static int bpf_crypto_lskcipher_has_algo(const char *algo)
- {
- return crypto_has_skcipher(algo, CRYPTO_ALG_TYPE_LSKCIPHER, CRYPTO_ALG_TYPE_MASK);
- }
- static int bpf_crypto_lskcipher_setkey(void *tfm, const u8 *key, unsigned int keylen)
- {
- return crypto_lskcipher_setkey(tfm, key, keylen);
- }
- static u32 bpf_crypto_lskcipher_get_flags(void *tfm)
- {
- return crypto_lskcipher_get_flags(tfm);
- }
- static unsigned int bpf_crypto_lskcipher_ivsize(void *tfm)
- {
- return crypto_lskcipher_ivsize(tfm);
- }
- static unsigned int bpf_crypto_lskcipher_statesize(void *tfm)
- {
- return crypto_lskcipher_statesize(tfm);
- }
- static int bpf_crypto_lskcipher_encrypt(void *tfm, const u8 *src, u8 *dst,
- unsigned int len, u8 *siv)
- {
- return crypto_lskcipher_encrypt(tfm, src, dst, len, siv);
- }
- static int bpf_crypto_lskcipher_decrypt(void *tfm, const u8 *src, u8 *dst,
- unsigned int len, u8 *siv)
- {
- return crypto_lskcipher_decrypt(tfm, src, dst, len, siv);
- }
- static const struct bpf_crypto_type bpf_crypto_lskcipher_type = {
- .alloc_tfm = bpf_crypto_lskcipher_alloc_tfm,
- .free_tfm = bpf_crypto_lskcipher_free_tfm,
- .has_algo = bpf_crypto_lskcipher_has_algo,
- .setkey = bpf_crypto_lskcipher_setkey,
- .encrypt = bpf_crypto_lskcipher_encrypt,
- .decrypt = bpf_crypto_lskcipher_decrypt,
- .ivsize = bpf_crypto_lskcipher_ivsize,
- .statesize = bpf_crypto_lskcipher_statesize,
- .get_flags = bpf_crypto_lskcipher_get_flags,
- .owner = THIS_MODULE,
- .name = "skcipher",
- };
- static int __init bpf_crypto_skcipher_init(void)
- {
- return bpf_crypto_register_type(&bpf_crypto_lskcipher_type);
- }
- static void __exit bpf_crypto_skcipher_exit(void)
- {
- int err = bpf_crypto_unregister_type(&bpf_crypto_lskcipher_type);
- WARN_ON_ONCE(err);
- }
- module_init(bpf_crypto_skcipher_init);
- module_exit(bpf_crypto_skcipher_exit);
- MODULE_LICENSE("GPL");
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