crypto/sha512.c - pub/scm/linux/kernel/git/mst/vhost - Git at Google

 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Crypto API support for SHA-384, SHA-512, HMAC-SHA384, and HMAC-SHA512
  *
  * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
  * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
  * Copyright (c) 2003 Kyle McMartin <kyle@debian.org>
  * Copyright 2025 Google LLC
  */
 #include <crypto/internal/hash.h>
 #include <crypto/sha2.h>
 #include <linux/kernel.h>
 #include <linux/module.h>

 /*
  * Export and import functions.  crypto_shash wants a particular format that
  * matches that used by some legacy drivers.  It currently is the same as the
  * library SHA context, except the value in bytecount_lo must be block-aligned
  * and the remainder must be stored in an extra u8 appended to the struct.
  */

 #define SHA512_SHASH_STATE_SIZE 209
 static_assert(offsetof(struct __sha512_ctx, state) == 0);
 static_assert(offsetof(struct __sha512_ctx, bytecount_lo) == 64);
 static_assert(offsetof(struct __sha512_ctx, bytecount_hi) == 72);
 static_assert(offsetof(struct __sha512_ctx, buf) == 80);
 static_assert(sizeof(struct __sha512_ctx) + 1 == SHA512_SHASH_STATE_SIZE);

 static int __crypto_sha512_export(const struct __sha512_ctx *ctx0, void *out)
 {
 	struct __sha512_ctx ctx = *ctx0;
 	unsigned int partial;
 	u8 *p = out;

 	partial = ctx.bytecount_lo % SHA512_BLOCK_SIZE;
 	ctx.bytecount_lo -= partial;
 	memcpy(p, &ctx, sizeof(ctx));
 	p += sizeof(ctx);
 	*p = partial;
 	return 0;
 }

 static int __crypto_sha512_import(struct __sha512_ctx *ctx, const void *in)
 {
 	const u8 *p = in;

 	memcpy(ctx, p, sizeof(*ctx));
 	p += sizeof(*ctx);
 	ctx->bytecount_lo += *p;
 	return 0;
 }

 /* SHA-384 */

 const u8 sha384_zero_message_hash[SHA384_DIGEST_SIZE] = {
 	0x38, 0xb0, 0x60, 0xa7, 0x51, 0xac, 0x96, 0x38,
 	0x4c, 0xd9, 0x32, 0x7e, 0xb1, 0xb1, 0xe3, 0x6a,
 	0x21, 0xfd, 0xb7, 0x11, 0x14, 0xbe, 0x07, 0x43,
 	0x4c, 0x0c, 0xc7, 0xbf, 0x63, 0xf6, 0xe1, 0xda,
 	0x27, 0x4e, 0xde, 0xbf, 0xe7, 0x6f, 0x65, 0xfb,
 	0xd5, 0x1a, 0xd2, 0xf1, 0x48, 0x98, 0xb9, 0x5b
 };
 EXPORT_SYMBOL_GPL(sha384_zero_message_hash);

 #define SHA384_CTX(desc) ((struct sha384_ctx *)shash_desc_ctx(desc))

 static int crypto_sha384_init(struct shash_desc *desc)
 {
 	sha384_init(SHA384_CTX(desc));
 	return 0;
 }

 static int crypto_sha384_update(struct shash_desc *desc,
 				const u8 *data, unsigned int len)
 {
 	sha384_update(SHA384_CTX(desc), data, len);
 	return 0;
 }

 static int crypto_sha384_final(struct shash_desc *desc, u8 *out)
 {
 	sha384_final(SHA384_CTX(desc), out);
 	return 0;
 }

 static int crypto_sha384_digest(struct shash_desc *desc,
 				const u8 *data, unsigned int len, u8 *out)
 {
 	sha384(data, len, out);
 	return 0;
 }

 static int crypto_sha384_export(struct shash_desc *desc, void *out)
 {
 	return __crypto_sha512_export(&SHA384_CTX(desc)->ctx, out);
 }

 static int crypto_sha384_import(struct shash_desc *desc, const void *in)
 {
 	return __crypto_sha512_import(&SHA384_CTX(desc)->ctx, in);
 }

 /* SHA-512 */

 const u8 sha512_zero_message_hash[SHA512_DIGEST_SIZE] = {
 	0xcf, 0x83, 0xe1, 0x35, 0x7e, 0xef, 0xb8, 0xbd,
 	0xf1, 0x54, 0x28, 0x50, 0xd6, 0x6d, 0x80, 0x07,
 	0xd6, 0x20, 0xe4, 0x05, 0x0b, 0x57, 0x15, 0xdc,
 	0x83, 0xf4, 0xa9, 0x21, 0xd3, 0x6c, 0xe9, 0xce,
 	0x47, 0xd0, 0xd1, 0x3c, 0x5d, 0x85, 0xf2, 0xb0,
 	0xff, 0x83, 0x18, 0xd2, 0x87, 0x7e, 0xec, 0x2f,
 	0x63, 0xb9, 0x31, 0xbd, 0x47, 0x41, 0x7a, 0x81,
 	0xa5, 0x38, 0x32, 0x7a, 0xf9, 0x27, 0xda, 0x3e
 };
 EXPORT_SYMBOL_GPL(sha512_zero_message_hash);

 #define SHA512_CTX(desc) ((struct sha512_ctx *)shash_desc_ctx(desc))

 static int crypto_sha512_init(struct shash_desc *desc)
 {
 	sha512_init(SHA512_CTX(desc));
 	return 0;
 }

 static int crypto_sha512_update(struct shash_desc *desc,
 				const u8 *data, unsigned int len)
 {
 	sha512_update(SHA512_CTX(desc), data, len);
 	return 0;
 }

 static int crypto_sha512_final(struct shash_desc *desc, u8 *out)
 {
 	sha512_final(SHA512_CTX(desc), out);
 	return 0;
 }

 static int crypto_sha512_digest(struct shash_desc *desc,
 				const u8 *data, unsigned int len, u8 *out)
 {
 	sha512(data, len, out);
 	return 0;
 }

 static int crypto_sha512_export(struct shash_desc *desc, void *out)
 {
 	return __crypto_sha512_export(&SHA512_CTX(desc)->ctx, out);
 }

 static int crypto_sha512_import(struct shash_desc *desc, const void *in)
 {
 	return __crypto_sha512_import(&SHA512_CTX(desc)->ctx, in);
 }

 /* HMAC-SHA384 */

 #define HMAC_SHA384_KEY(tfm) ((struct hmac_sha384_key *)crypto_shash_ctx(tfm))
 #define HMAC_SHA384_CTX(desc) ((struct hmac_sha384_ctx *)shash_desc_ctx(desc))

 static int crypto_hmac_sha384_setkey(struct crypto_shash *tfm,
 				     const u8 *raw_key, unsigned int keylen)
 {
 	hmac_sha384_preparekey(HMAC_SHA384_KEY(tfm), raw_key, keylen);
 	return 0;
 }

 static int crypto_hmac_sha384_init(struct shash_desc *desc)
 {
 	hmac_sha384_init(HMAC_SHA384_CTX(desc), HMAC_SHA384_KEY(desc->tfm));
 	return 0;
 }

 static int crypto_hmac_sha384_update(struct shash_desc *desc,
 				     const u8 *data, unsigned int len)
 {
 	hmac_sha384_update(HMAC_SHA384_CTX(desc), data, len);
 	return 0;
 }

 static int crypto_hmac_sha384_final(struct shash_desc *desc, u8 *out)
 {
 	hmac_sha384_final(HMAC_SHA384_CTX(desc), out);
 	return 0;
 }

 static int crypto_hmac_sha384_digest(struct shash_desc *desc,
 				     const u8 *data, unsigned int len,
 				     u8 *out)
 {
 	hmac_sha384(HMAC_SHA384_KEY(desc->tfm), data, len, out);
 	return 0;
 }

 static int crypto_hmac_sha384_export(struct shash_desc *desc, void *out)
 {
 	return __crypto_sha512_export(&HMAC_SHA384_CTX(desc)->ctx.sha_ctx, out);
 }

 static int crypto_hmac_sha384_import(struct shash_desc *desc, const void *in)
 {
 	struct hmac_sha384_ctx *ctx = HMAC_SHA384_CTX(desc);

 	ctx->ctx.ostate = HMAC_SHA384_KEY(desc->tfm)->key.ostate;
 	return __crypto_sha512_import(&ctx->ctx.sha_ctx, in);
 }

 /* HMAC-SHA512 */

 #define HMAC_SHA512_KEY(tfm) ((struct hmac_sha512_key *)crypto_shash_ctx(tfm))
 #define HMAC_SHA512_CTX(desc) ((struct hmac_sha512_ctx *)shash_desc_ctx(desc))

 static int crypto_hmac_sha512_setkey(struct crypto_shash *tfm,
 				     const u8 *raw_key, unsigned int keylen)
 {
 	hmac_sha512_preparekey(HMAC_SHA512_KEY(tfm), raw_key, keylen);
 	return 0;
 }

 static int crypto_hmac_sha512_init(struct shash_desc *desc)
 {
 	hmac_sha512_init(HMAC_SHA512_CTX(desc), HMAC_SHA512_KEY(desc->tfm));
 	return 0;
 }

 static int crypto_hmac_sha512_update(struct shash_desc *desc,
 				     const u8 *data, unsigned int len)
 {
 	hmac_sha512_update(HMAC_SHA512_CTX(desc), data, len);
 	return 0;
 }

 static int crypto_hmac_sha512_final(struct shash_desc *desc, u8 *out)
 {
 	hmac_sha512_final(HMAC_SHA512_CTX(desc), out);
 	return 0;
 }

 static int crypto_hmac_sha512_digest(struct shash_desc *desc,
 				     const u8 *data, unsigned int len,
 				     u8 *out)
 {
 	hmac_sha512(HMAC_SHA512_KEY(desc->tfm), data, len, out);
 	return 0;
 }

 static int crypto_hmac_sha512_export(struct shash_desc *desc, void *out)
 {
 	return __crypto_sha512_export(&HMAC_SHA512_CTX(desc)->ctx.sha_ctx, out);
 }

 static int crypto_hmac_sha512_import(struct shash_desc *desc, const void *in)
 {
 	struct hmac_sha512_ctx *ctx = HMAC_SHA512_CTX(desc);

 	ctx->ctx.ostate = HMAC_SHA512_KEY(desc->tfm)->key.ostate;
 	return __crypto_sha512_import(&ctx->ctx.sha_ctx, in);
 }

 /* Algorithm definitions */

 static struct shash_alg algs[] = {
 	{
 		.base.cra_name		= "sha384",
 		.base.cra_driver_name	= "sha384-lib",
 		.base.cra_priority	= 300,
 		.base.cra_blocksize	= SHA384_BLOCK_SIZE,
 		.base.cra_module	= THIS_MODULE,
 		.digestsize		= SHA384_DIGEST_SIZE,
 		.init			= crypto_sha384_init,
 		.update			= crypto_sha384_update,
 		.final			= crypto_sha384_final,
 		.digest			= crypto_sha384_digest,
 		.export			= crypto_sha384_export,
 		.import			= crypto_sha384_import,
 		.descsize		= sizeof(struct sha384_ctx),
 		.statesize		= SHA512_SHASH_STATE_SIZE,
 	},
 	{
 		.base.cra_name		= "sha512",
 		.base.cra_driver_name	= "sha512-lib",
 		.base.cra_priority	= 300,
 		.base.cra_blocksize	= SHA512_BLOCK_SIZE,
 		.base.cra_module	= THIS_MODULE,
 		.digestsize		= SHA512_DIGEST_SIZE,
 		.init			= crypto_sha512_init,
 		.update			= crypto_sha512_update,
 		.final			= crypto_sha512_final,
 		.digest			= crypto_sha512_digest,
 		.export			= crypto_sha512_export,
 		.import			= crypto_sha512_import,
 		.descsize		= sizeof(struct sha512_ctx),
 		.statesize		= SHA512_SHASH_STATE_SIZE,
 	},
 	{
 		.base.cra_name		= "hmac(sha384)",
 		.base.cra_driver_name	= "hmac-sha384-lib",
 		.base.cra_priority	= 300,
 		.base.cra_blocksize	= SHA384_BLOCK_SIZE,
 		.base.cra_ctxsize	= sizeof(struct hmac_sha384_key),
 		.base.cra_module	= THIS_MODULE,
 		.digestsize		= SHA384_DIGEST_SIZE,
 		.setkey			= crypto_hmac_sha384_setkey,
 		.init			= crypto_hmac_sha384_init,
 		.update			= crypto_hmac_sha384_update,
 		.final			= crypto_hmac_sha384_final,
 		.digest			= crypto_hmac_sha384_digest,
 		.export			= crypto_hmac_sha384_export,
 		.import			= crypto_hmac_sha384_import,
 		.descsize		= sizeof(struct hmac_sha384_ctx),
 		.statesize		= SHA512_SHASH_STATE_SIZE,
 	},
 	{
 		.base.cra_name		= "hmac(sha512)",
 		.base.cra_driver_name	= "hmac-sha512-lib",
 		.base.cra_priority	= 300,
 		.base.cra_blocksize	= SHA512_BLOCK_SIZE,
 		.base.cra_ctxsize	= sizeof(struct hmac_sha512_key),
 		.base.cra_module	= THIS_MODULE,
 		.digestsize		= SHA512_DIGEST_SIZE,
 		.setkey			= crypto_hmac_sha512_setkey,
 		.init			= crypto_hmac_sha512_init,
 		.update			= crypto_hmac_sha512_update,
 		.final			= crypto_hmac_sha512_final,
 		.digest			= crypto_hmac_sha512_digest,
 		.export			= crypto_hmac_sha512_export,
 		.import			= crypto_hmac_sha512_import,
 		.descsize		= sizeof(struct hmac_sha512_ctx),
 		.statesize		= SHA512_SHASH_STATE_SIZE,
 	},
 };

 static int __init crypto_sha512_mod_init(void)
 {
 	return crypto_register_shashes(algs, ARRAY_SIZE(algs));
 }
 module_init(crypto_sha512_mod_init);

 static void __exit crypto_sha512_mod_exit(void)
 {
 	crypto_unregister_shashes(algs, ARRAY_SIZE(algs));
 }
 module_exit(crypto_sha512_mod_exit);

 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Crypto API support for SHA-384, SHA-512, HMAC-SHA384, and HMAC-SHA512");

 MODULE_ALIAS_CRYPTO("sha384");
 MODULE_ALIAS_CRYPTO("sha384-lib");
 MODULE_ALIAS_CRYPTO("sha512");
 MODULE_ALIAS_CRYPTO("sha512-lib");
 MODULE_ALIAS_CRYPTO("hmac(sha384)");
 MODULE_ALIAS_CRYPTO("hmac-sha384-lib");
 MODULE_ALIAS_CRYPTO("hmac(sha512)");
 MODULE_ALIAS_CRYPTO("hmac-sha512-lib");
	// SPDX-License-Identifier: GPL-2.0-or-later
	/*
	* Crypto API support for SHA-384, SHA-512, HMAC-SHA384, and HMAC-SHA512
	*
	* Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
	* Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
	* Copyright (c) 2003 Kyle McMartin <kyle@debian.org>
	* Copyright 2025 Google LLC
	*/
	#include <crypto/internal/hash.h>
	#include <crypto/sha2.h>
	#include <linux/kernel.h>
	#include <linux/module.h>

	/*
	* Export and import functions. crypto_shash wants a particular format that
	* matches that used by some legacy drivers. It currently is the same as the
	* library SHA context, except the value in bytecount_lo must be block-aligned
	* and the remainder must be stored in an extra u8 appended to the struct.
	*/

	#define SHA512_SHASH_STATE_SIZE 209
	static_assert(offsetof(struct __sha512_ctx, state) == 0);
	static_assert(offsetof(struct __sha512_ctx, bytecount_lo) == 64);
	static_assert(offsetof(struct __sha512_ctx, bytecount_hi) == 72);
	static_assert(offsetof(struct __sha512_ctx, buf) == 80);
	static_assert(sizeof(struct __sha512_ctx) + 1 == SHA512_SHASH_STATE_SIZE);

	static int __crypto_sha512_export(const struct __sha512_ctx ctx0, void out)
	{
	struct __sha512_ctx ctx = *ctx0;
	unsigned int partial;
	u8 *p = out;

	partial = ctx.bytecount_lo % SHA512_BLOCK_SIZE;
	ctx.bytecount_lo -= partial;
	memcpy(p, &ctx, sizeof(ctx));
	p += sizeof(ctx);
	*p = partial;
	return 0;
	}

	static int __crypto_sha512_import(struct __sha512_ctx ctx, const void in)
	{
	const u8 *p = in;

	memcpy(ctx, p, sizeof(*ctx));
	p += sizeof(*ctx);
	ctx->bytecount_lo += *p;
	return 0;
	}

	/* SHA-384 */

	const u8 sha384_zero_message_hash[SHA384_DIGEST_SIZE] = {
	0x38, 0xb0, 0x60, 0xa7, 0x51, 0xac, 0x96, 0x38,
	0x4c, 0xd9, 0x32, 0x7e, 0xb1, 0xb1, 0xe3, 0x6a,
	0x21, 0xfd, 0xb7, 0x11, 0x14, 0xbe, 0x07, 0x43,
	0x4c, 0x0c, 0xc7, 0xbf, 0x63, 0xf6, 0xe1, 0xda,
	0x27, 0x4e, 0xde, 0xbf, 0xe7, 0x6f, 0x65, 0xfb,
	0xd5, 0x1a, 0xd2, 0xf1, 0x48, 0x98, 0xb9, 0x5b
	};
	EXPORT_SYMBOL_GPL(sha384_zero_message_hash);

	#define SHA384_CTX(desc) ((struct sha384_ctx *)shash_desc_ctx(desc))

	static int crypto_sha384_init(struct shash_desc *desc)
	{
	sha384_init(SHA384_CTX(desc));
	return 0;
	}

	static int crypto_sha384_update(struct shash_desc *desc,
	const u8 *data, unsigned int len)
	{
	sha384_update(SHA384_CTX(desc), data, len);
	return 0;
	}

	static int crypto_sha384_final(struct shash_desc desc, u8 out)
	{
	sha384_final(SHA384_CTX(desc), out);
	return 0;
	}

	static int crypto_sha384_digest(struct shash_desc *desc,
	const u8 data, unsigned int len, u8 out)
	{
	sha384(data, len, out);
	return 0;
	}

	static int crypto_sha384_export(struct shash_desc desc, void out)
	{
	return __crypto_sha512_export(&SHA384_CTX(desc)->ctx, out);
	}

	static int crypto_sha384_import(struct shash_desc desc, const void in)
	{
	return __crypto_sha512_import(&SHA384_CTX(desc)->ctx, in);
	}

	/* SHA-512 */

	const u8 sha512_zero_message_hash[SHA512_DIGEST_SIZE] = {
	0xcf, 0x83, 0xe1, 0x35, 0x7e, 0xef, 0xb8, 0xbd,
	0xf1, 0x54, 0x28, 0x50, 0xd6, 0x6d, 0x80, 0x07,
	0xd6, 0x20, 0xe4, 0x05, 0x0b, 0x57, 0x15, 0xdc,
	0x83, 0xf4, 0xa9, 0x21, 0xd3, 0x6c, 0xe9, 0xce,
	0x47, 0xd0, 0xd1, 0x3c, 0x5d, 0x85, 0xf2, 0xb0,
	0xff, 0x83, 0x18, 0xd2, 0x87, 0x7e, 0xec, 0x2f,
	0x63, 0xb9, 0x31, 0xbd, 0x47, 0x41, 0x7a, 0x81,
	0xa5, 0x38, 0x32, 0x7a, 0xf9, 0x27, 0xda, 0x3e
	};
	EXPORT_SYMBOL_GPL(sha512_zero_message_hash);

	#define SHA512_CTX(desc) ((struct sha512_ctx *)shash_desc_ctx(desc))

	static int crypto_sha512_init(struct shash_desc *desc)
	{
	sha512_init(SHA512_CTX(desc));
	return 0;
	}

	static int crypto_sha512_update(struct shash_desc *desc,
	const u8 *data, unsigned int len)
	{
	sha512_update(SHA512_CTX(desc), data, len);
	return 0;
	}

	static int crypto_sha512_final(struct shash_desc desc, u8 out)
	{
	sha512_final(SHA512_CTX(desc), out);
	return 0;
	}

	static int crypto_sha512_digest(struct shash_desc *desc,
	const u8 data, unsigned int len, u8 out)
	{
	sha512(data, len, out);
	return 0;
	}

	static int crypto_sha512_export(struct shash_desc desc, void out)
	{
	return __crypto_sha512_export(&SHA512_CTX(desc)->ctx, out);
	}

	static int crypto_sha512_import(struct shash_desc desc, const void in)
	{
	return __crypto_sha512_import(&SHA512_CTX(desc)->ctx, in);
	}

	/* HMAC-SHA384 */

	#define HMAC_SHA384_KEY(tfm) ((struct hmac_sha384_key *)crypto_shash_ctx(tfm))
	#define HMAC_SHA384_CTX(desc) ((struct hmac_sha384_ctx *)shash_desc_ctx(desc))

	static int crypto_hmac_sha384_setkey(struct crypto_shash *tfm,
	const u8 *raw_key, unsigned int keylen)
	{
	hmac_sha384_preparekey(HMAC_SHA384_KEY(tfm), raw_key, keylen);
	return 0;
	}

	static int crypto_hmac_sha384_init(struct shash_desc *desc)
	{
	hmac_sha384_init(HMAC_SHA384_CTX(desc), HMAC_SHA384_KEY(desc->tfm));
	return 0;
	}

	static int crypto_hmac_sha384_update(struct shash_desc *desc,
	const u8 *data, unsigned int len)
	{
	hmac_sha384_update(HMAC_SHA384_CTX(desc), data, len);
	return 0;
	}

	static int crypto_hmac_sha384_final(struct shash_desc desc, u8 out)
	{
	hmac_sha384_final(HMAC_SHA384_CTX(desc), out);
	return 0;
	}

	static int crypto_hmac_sha384_digest(struct shash_desc *desc,
	const u8 *data, unsigned int len,
	u8 *out)
	{
	hmac_sha384(HMAC_SHA384_KEY(desc->tfm), data, len, out);
	return 0;
	}

	static int crypto_hmac_sha384_export(struct shash_desc desc, void out)
	{
	return __crypto_sha512_export(&HMAC_SHA384_CTX(desc)->ctx.sha_ctx, out);
	}

	static int crypto_hmac_sha384_import(struct shash_desc desc, const void in)
	{
	struct hmac_sha384_ctx *ctx = HMAC_SHA384_CTX(desc);

	ctx->ctx.ostate = HMAC_SHA384_KEY(desc->tfm)->key.ostate;
	return __crypto_sha512_import(&ctx->ctx.sha_ctx, in);
	}

	/* HMAC-SHA512 */

	#define HMAC_SHA512_KEY(tfm) ((struct hmac_sha512_key *)crypto_shash_ctx(tfm))
	#define HMAC_SHA512_CTX(desc) ((struct hmac_sha512_ctx *)shash_desc_ctx(desc))

	static int crypto_hmac_sha512_setkey(struct crypto_shash *tfm,
	const u8 *raw_key, unsigned int keylen)
	{
	hmac_sha512_preparekey(HMAC_SHA512_KEY(tfm), raw_key, keylen);
	return 0;
	}

	static int crypto_hmac_sha512_init(struct shash_desc *desc)
	{
	hmac_sha512_init(HMAC_SHA512_CTX(desc), HMAC_SHA512_KEY(desc->tfm));
	return 0;
	}

	static int crypto_hmac_sha512_update(struct shash_desc *desc,
	const u8 *data, unsigned int len)
	{
	hmac_sha512_update(HMAC_SHA512_CTX(desc), data, len);
	return 0;
	}

	static int crypto_hmac_sha512_final(struct shash_desc desc, u8 out)
	{
	hmac_sha512_final(HMAC_SHA512_CTX(desc), out);
	return 0;
	}

	static int crypto_hmac_sha512_digest(struct shash_desc *desc,
	const u8 *data, unsigned int len,
	u8 *out)
	{
	hmac_sha512(HMAC_SHA512_KEY(desc->tfm), data, len, out);
	return 0;
	}

	static int crypto_hmac_sha512_export(struct shash_desc desc, void out)
	{
	return __crypto_sha512_export(&HMAC_SHA512_CTX(desc)->ctx.sha_ctx, out);
	}

	static int crypto_hmac_sha512_import(struct shash_desc desc, const void in)
	{
	struct hmac_sha512_ctx *ctx = HMAC_SHA512_CTX(desc);

	ctx->ctx.ostate = HMAC_SHA512_KEY(desc->tfm)->key.ostate;
	return __crypto_sha512_import(&ctx->ctx.sha_ctx, in);
	}

	/* Algorithm definitions */

	static struct shash_alg algs[] = {
	{
	.base.cra_name = "sha384",
	.base.cra_driver_name = "sha384-lib",
	.base.cra_priority = 300,
	.base.cra_blocksize = SHA384_BLOCK_SIZE,
	.base.cra_module = THIS_MODULE,
	.digestsize = SHA384_DIGEST_SIZE,
	.init = crypto_sha384_init,
	.update = crypto_sha384_update,
	.final = crypto_sha384_final,
	.digest = crypto_sha384_digest,
	.export = crypto_sha384_export,
	.import = crypto_sha384_import,
	.descsize = sizeof(struct sha384_ctx),
	.statesize = SHA512_SHASH_STATE_SIZE,
	},
	{
	.base.cra_name = "sha512",
	.base.cra_driver_name = "sha512-lib",
	.base.cra_priority = 300,
	.base.cra_blocksize = SHA512_BLOCK_SIZE,
	.base.cra_module = THIS_MODULE,
	.digestsize = SHA512_DIGEST_SIZE,
	.init = crypto_sha512_init,
	.update = crypto_sha512_update,
	.final = crypto_sha512_final,
	.digest = crypto_sha512_digest,
	.export = crypto_sha512_export,
	.import = crypto_sha512_import,
	.descsize = sizeof(struct sha512_ctx),
	.statesize = SHA512_SHASH_STATE_SIZE,
	},
	{
	.base.cra_name = "hmac(sha384)",
	.base.cra_driver_name = "hmac-sha384-lib",
	.base.cra_priority = 300,
	.base.cra_blocksize = SHA384_BLOCK_SIZE,
	.base.cra_ctxsize = sizeof(struct hmac_sha384_key),
	.base.cra_module = THIS_MODULE,
	.digestsize = SHA384_DIGEST_SIZE,
	.setkey = crypto_hmac_sha384_setkey,
	.init = crypto_hmac_sha384_init,
	.update = crypto_hmac_sha384_update,
	.final = crypto_hmac_sha384_final,
	.digest = crypto_hmac_sha384_digest,
	.export = crypto_hmac_sha384_export,
	.import = crypto_hmac_sha384_import,
	.descsize = sizeof(struct hmac_sha384_ctx),
	.statesize = SHA512_SHASH_STATE_SIZE,
	},
	{
	.base.cra_name = "hmac(sha512)",
	.base.cra_driver_name = "hmac-sha512-lib",
	.base.cra_priority = 300,
	.base.cra_blocksize = SHA512_BLOCK_SIZE,
	.base.cra_ctxsize = sizeof(struct hmac_sha512_key),
	.base.cra_module = THIS_MODULE,
	.digestsize = SHA512_DIGEST_SIZE,
	.setkey = crypto_hmac_sha512_setkey,
	.init = crypto_hmac_sha512_init,
	.update = crypto_hmac_sha512_update,
	.final = crypto_hmac_sha512_final,
	.digest = crypto_hmac_sha512_digest,
	.export = crypto_hmac_sha512_export,
	.import = crypto_hmac_sha512_import,
	.descsize = sizeof(struct hmac_sha512_ctx),
	.statesize = SHA512_SHASH_STATE_SIZE,
	},
	};

	static int __init crypto_sha512_mod_init(void)
	{
	return crypto_register_shashes(algs, ARRAY_SIZE(algs));
	}
	module_init(crypto_sha512_mod_init);

	static void __exit crypto_sha512_mod_exit(void)
	{
	crypto_unregister_shashes(algs, ARRAY_SIZE(algs));
	}
	module_exit(crypto_sha512_mod_exit);

	MODULE_LICENSE("GPL");
	MODULE_DESCRIPTION("Crypto API support for SHA-384, SHA-512, HMAC-SHA384, and HMAC-SHA512");

	MODULE_ALIAS_CRYPTO("sha384");
	MODULE_ALIAS_CRYPTO("sha384-lib");
	MODULE_ALIAS_CRYPTO("sha512");
	MODULE_ALIAS_CRYPTO("sha512-lib");
	MODULE_ALIAS_CRYPTO("hmac(sha384)");
	MODULE_ALIAS_CRYPTO("hmac-sha384-lib");
	MODULE_ALIAS_CRYPTO("hmac(sha512)");
	MODULE_ALIAS_CRYPTO("hmac-sha512-lib");