1 files changed, 39 insertions, 0 deletions
diff --git a/include/crypto/sha1.h b/include/crypto/sha1.h
new file mode 100644
index 000000000000..f48230b1413c
--- /dev/null
+++ b/include/crypto/sha1.h
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Common values for SHA-1 algorithms
+ */
+
+#ifndef _CRYPTO_SHA1_H
+#define _CRYPTO_SHA1_H
+
+#include <linux/types.h>
+
+#define SHA1_DIGEST_SIZE        20
+#define SHA1_BLOCK_SIZE         64
+#define SHA1_STATE_SIZE         offsetof(struct sha1_state, buffer)
+
+#define SHA1_H0		0x67452301UL
+#define SHA1_H1		0xefcdab89UL
+#define SHA1_H2		0x98badcfeUL
+#define SHA1_H3		0x10325476UL
+#define SHA1_H4		0xc3d2e1f0UL
+
+extern const u8 sha1_zero_message_hash[SHA1_DIGEST_SIZE];
+
+struct sha1_state {
+	u32 state[SHA1_DIGEST_SIZE / 4];
+	u64 count;
+	u8 buffer[SHA1_BLOCK_SIZE];
+};
+
+/*
+ * An implementation of SHA-1's compression function.  Don't use in new code!
+ * You shouldn't be using SHA-1, and even if you *have* to use SHA-1, this isn't
+ * the correct way to hash something with SHA-1 (use crypto_shash instead).
+ */
+#define SHA1_DIGEST_WORDS	(SHA1_DIGEST_SIZE / 4)
+#define SHA1_WORKSPACE_WORDS	16
+void sha1_init(__u32 *buf);
+void sha1_transform(__u32 *digest, const char *data, __u32 *W);
+
+#endif /* _CRYPTO_SHA1_H */