Add hash operation callbacks to bpf_crypto_type structure:
- hash(): Performs hashing operation on input data
- digestsize(): Returns the output size for the hash algorithm
These additions enable BPF programs to use cryptographic hash functions
through the unified bpf_crypto_type interface, supporting use cases such
as content verification, integrity checking, and data authentication.
Signed-off-by: Daniel Hodges <git@danielhodges.dev>
---
include/linux/bpf_crypto.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/linux/bpf_crypto.h b/include/linux/bpf_crypto.h
index a41e71d4e2d9..c84371cc4e47 100644
--- a/include/linux/bpf_crypto.h
+++ b/include/linux/bpf_crypto.h
@@ -11,8 +11,10 @@ struct bpf_crypto_type {
int (*setauthsize)(void *tfm, unsigned int authsize);
int (*encrypt)(void *tfm, const u8 *src, u8 *dst, unsigned int len, u8 *iv);
int (*decrypt)(void *tfm, const u8 *src, u8 *dst, unsigned int len, u8 *iv);
+ int (*hash)(void *tfm, const u8 *data, u8 *out, unsigned int len);
unsigned int (*ivsize)(void *tfm);
unsigned int (*statesize)(void *tfm);
+ unsigned int (*digestsize)(void *tfm);
u32 (*get_flags)(void *tfm);
struct module *owner;
char name[14];
--
2.51.0