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linux/crypto/cbc.c

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-27 08:55:01 +02:00
[CRYPTO] cipher: Added block ciphers for CBC/ECB This patch adds two block cipher algorithms, CBC and ECB. These are implemented as templates on top of existing single-block cipher algorithms. They invoke the single-block cipher through the new encrypt_one/decrypt_one interface. This also optimises the in-place encryption and decryption to remove the cost of an IV copy each round. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21 11:44:08 +10:00
crypto: cbc - Export CBC implementation This patch moves the core CBC implementation into a header file so that it can be reused by drivers implementing CBC. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-22 20:08:42 +08:00
[CRYPTO] cipher: Added block ciphers for CBC/ECB This patch adds two block cipher algorithms, CBC and ECB. These are implemented as templates on top of existing single-block cipher algorithms. They invoke the single-block cipher through the new encrypt_one/decrypt_one interface. This also optimises the in-place encryption and decryption to remove the cost of an IV copy each round. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21 11:44:08 +10:00
crypto: cbc - Convert to skcipher This patch converts cbc over to the skcipher interface. It also rearranges the code to allow it to be reused by drivers. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-22 20:08:39 +08:00
[CRYPTO] cipher: Added block ciphers for CBC/ECB This patch adds two block cipher algorithms, CBC and ECB. These are implemented as templates on top of existing single-block cipher algorithms. They invoke the single-block cipher through the new encrypt_one/decrypt_one interface. This also optimises the in-place encryption and decryption to remove the cost of an IV copy each round. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21 11:44:08 +10:00
[CRYPTO] cbc: Require block size to be a power of 2 All common block ciphers have a block size that's a power of 2. In fact, all of our block ciphers obey this rule. If we require this then CBC can be optimised to avoid an expensive divide on in-place decryption. I've also changed the saving of the first IV in the in-place decryption case to the last IV because that lets us use walk->iv (which is already aligned) for the xor operation where alignment is required. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2007-11-20 17:36:00 +08:00
[CRYPTO] cipher: Added block ciphers for CBC/ECB This patch adds two block cipher algorithms, CBC and ECB. These are implemented as templates on top of existing single-block cipher algorithms. They invoke the single-block cipher through the new encrypt_one/decrypt_one interface. This also optimises the in-place encryption and decryption to remove the cost of an IV copy each round. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21 11:44:08 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Convert to skcipher This patch converts cbc over to the skcipher interface. It also rearranges the code to allow it to be reused by drivers. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-22 20:08:39 +08:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert to skcipher This patch converts cbc over to the skcipher interface. It also rearranges the code to allow it to be reused by drivers. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-22 20:08:39 +08:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: skcipher - Add internal state support Unlike chaining modes such as CBC, stream ciphers other than CTR usually hold an internal state that must be preserved if the operation is to be done piecemeal. This has not been represented in the API, resulting in the inability to split up stream cipher operations. This patch adds the basic representation of an internal state to skcipher and lskcipher. In the interest of backwards compatibility, the default has been set such that existing users are assumed to be operating in one go as opposed to piecemeal. With the new API, each lskcipher/skcipher algorithm has a new attribute called statesize. For skcipher, this is the size of the buffer that can be exported or imported similar to ahash. For lskcipher, instead of providing a buffer of ivsize, the user now has to provide a buffer of ivsize + statesize. Each skcipher operation is assumed to be final as they are now, but this may be overridden with a request flag. When the override occurs, the user may then export the partial state and reimport it later. For lskcipher operations this is reversed. All operations are not final and the state will be exported unless the FINAL bit is set. However, the CONT bit still has to be set for the state to be used. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-11-27 18:14:08 +08:00
[CRYPTO] cipher: Added block ciphers for CBC/ECB This patch adds two block cipher algorithms, CBC and ECB. These are implemented as templates on top of existing single-block cipher algorithms. They invoke the single-block cipher through the new encrypt_one/decrypt_one interface. This also optimises the in-place encryption and decryption to remove the cost of an IV copy each round. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21 11:44:08 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: skcipher - Add internal state support Unlike chaining modes such as CBC, stream ciphers other than CTR usually hold an internal state that must be preserved if the operation is to be done piecemeal. This has not been represented in the API, resulting in the inability to split up stream cipher operations. This patch adds the basic representation of an internal state to skcipher and lskcipher. In the interest of backwards compatibility, the default has been set such that existing users are assumed to be operating in one go as opposed to piecemeal. With the new API, each lskcipher/skcipher algorithm has a new attribute called statesize. For skcipher, this is the size of the buffer that can be exported or imported similar to ahash. For lskcipher, instead of providing a buffer of ivsize, the user now has to provide a buffer of ivsize + statesize. Each skcipher operation is assumed to be final as they are now, but this may be overridden with a request flag. When the override occurs, the user may then export the partial state and reimport it later. For lskcipher operations this is reversed. All operations are not final and the state will be exported unless the FINAL bit is set. However, the CONT bit still has to be set for the state to be used. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-11-27 18:14:08 +08:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert to skcipher This patch converts cbc over to the skcipher interface. It also rearranges the code to allow it to be reused by drivers. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-22 20:08:39 +08:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Convert to skcipher This patch converts cbc over to the skcipher interface. It also rearranges the code to allow it to be reused by drivers. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-22 20:08:39 +08:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - Remove cbc.h Now that crypto/cbc.h is only used by the generic cbc template, we can merge it back into the CBC code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-09-01 21:49:11 +10:00
crypto: cbc - Convert to skcipher This patch converts cbc over to the skcipher interface. It also rearranges the code to allow it to be reused by drivers. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-22 20:08:39 +08:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: skcipher - Add internal state support Unlike chaining modes such as CBC, stream ciphers other than CTR usually hold an internal state that must be preserved if the operation is to be done piecemeal. This has not been represented in the API, resulting in the inability to split up stream cipher operations. This patch adds the basic representation of an internal state to skcipher and lskcipher. In the interest of backwards compatibility, the default has been set such that existing users are assumed to be operating in one go as opposed to piecemeal. With the new API, each lskcipher/skcipher algorithm has a new attribute called statesize. For skcipher, this is the size of the buffer that can be exported or imported similar to ahash. For lskcipher, instead of providing a buffer of ivsize, the user now has to provide a buffer of ivsize + statesize. Each skcipher operation is assumed to be final as they are now, but this may be overridden with a request flag. When the override occurs, the user may then export the partial state and reimport it later. For lskcipher operations this is reversed. All operations are not final and the state will be exported unless the FINAL bit is set. However, the CONT bit still has to be set for the state to be used. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-11-27 18:14:08 +08:00
crypto: cbc - Convert to skcipher This patch converts cbc over to the skcipher interface. It also rearranges the code to allow it to be reused by drivers. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-22 20:08:39 +08:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: skcipher - Add internal state support Unlike chaining modes such as CBC, stream ciphers other than CTR usually hold an internal state that must be preserved if the operation is to be done piecemeal. This has not been represented in the API, resulting in the inability to split up stream cipher operations. This patch adds the basic representation of an internal state to skcipher and lskcipher. In the interest of backwards compatibility, the default has been set such that existing users are assumed to be operating in one go as opposed to piecemeal. With the new API, each lskcipher/skcipher algorithm has a new attribute called statesize. For skcipher, this is the size of the buffer that can be exported or imported similar to ahash. For lskcipher, instead of providing a buffer of ivsize, the user now has to provide a buffer of ivsize + statesize. Each skcipher operation is assumed to be final as they are now, but this may be overridden with a request flag. When the override occurs, the user may then export the partial state and reimport it later. For lskcipher operations this is reversed. All operations are not final and the state will be exported unless the FINAL bit is set. However, the CONT bit still has to be set for the state to be used. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-11-27 18:14:08 +08:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
[CRYPTO] cipher: Added block ciphers for CBC/ECB This patch adds two block cipher algorithms, CBC and ECB. These are implemented as templates on top of existing single-block cipher algorithms. They invoke the single-block cipher through the new encrypt_one/decrypt_one interface. This also optimises the in-place encryption and decryption to remove the cost of an IV copy each round. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21 11:44:08 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
[CRYPTO] cipher: Added block ciphers for CBC/ECB This patch adds two block cipher algorithms, CBC and ECB. These are implemented as templates on top of existing single-block cipher algorithms. They invoke the single-block cipher through the new encrypt_one/decrypt_one interface. This also optimises the in-place encryption and decryption to remove the cost of an IV copy each round. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21 11:44:08 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
[CRYPTO] cipher: Added block ciphers for CBC/ECB This patch adds two block cipher algorithms, CBC and ECB. These are implemented as templates on top of existing single-block cipher algorithms. They invoke the single-block cipher through the new encrypt_one/decrypt_one interface. This also optimises the in-place encryption and decryption to remove the cost of an IV copy each round. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21 11:44:08 +10:00
crypto: cbc - Convert to skcipher This patch converts cbc over to the skcipher interface. It also rearranges the code to allow it to be reused by drivers. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-22 20:08:39 +08:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
[CRYPTO] templates: Pass type/mask when creating instances This patch passes the type/mask along when constructing instances of templates. This is in preparation for templates that may support multiple types of instances depending on what is requested. For example, the planned software async crypto driver will use this construct. For the moment this allows us to check whether the instance constructed is of the correct type and avoid returning success if the type does not match. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2007-01-01 18:37:02 +11:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - convert to skcipher_alloc_instance_simple() The CBC template just wraps a single block cipher algorithm, so simplify it by converting it to use skcipher_alloc_instance_simple(). Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-01-03 20:16:15 -08:00
[CRYPTO] cbc: Require block size to be a power of 2 All common block ciphers have a block size that's a power of 2. In fact, all of our block ciphers obey this rule. If we require this then CBC can be optimised to avoid an expensive divide on in-place decryption. I've also changed the saving of the first IV in the in-place decryption case to the last IV because that lets us use walk->iv (which is already aligned) for the xor operation where alignment is required. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2007-11-20 17:36:00 +08:00
crypto: cbc - Convert to skcipher This patch converts cbc over to the skcipher interface. It also rearranges the code to allow it to be reused by drivers. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-22 20:08:39 +08:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: cbc - convert to skcipher_alloc_instance_simple() The CBC template just wraps a single block cipher algorithm, so simplify it by converting it to use skcipher_alloc_instance_simple(). Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-01-03 20:16:15 -08:00
[CRYPTO] cipher: Added block ciphers for CBC/ECB This patch adds two block cipher algorithms, CBC and ECB. These are implemented as templates on top of existing single-block cipher algorithms. They invoke the single-block cipher through the new encrypt_one/decrypt_one interface. This also optimises the in-place encryption and decryption to remove the cost of an IV copy each round. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21 11:44:08 +10:00
crypto: cbc - Ensure statesize is zero The cbc template should not be applied on stream ciphers, especially ones that have internal state. Enforce this by checking the state size when the instance is created. Reported-by: syzbot+050eeedd6c285d8c42f2@syzkaller.appspotmail.com Fixes: 47309ea13591 ("crypto: arc4 - Add internal state") Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2024-01-29 22:17:11 +08:00
crypto: cbc - Convert to skcipher This patch converts cbc over to the skcipher interface. It also rearranges the code to allow it to be reused by drivers. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-22 20:08:39 +08:00
[CRYPTO] cipher: Added block ciphers for CBC/ECB This patch adds two block cipher algorithms, CBC and ECB. These are implemented as templates on top of existing single-block cipher algorithms. They invoke the single-block cipher through the new encrypt_one/decrypt_one interface. This also optimises the in-place encryption and decryption to remove the cost of an IV copy each round. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21 11:44:08 +10:00
crypto: cbc - Convert from skcipher to lskcipher Replace the existing skcipher CBC template with an lskcipher version. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-14 16:28:28 +08:00
crypto: skcipher - Add skcipher_ialg_simple helper This patch introduces the skcipher_ialg_simple helper which fetches the crypto_alg structure from a simple skcipher instance's spawn. This allows us to remove the third argument from the function skcipher_alloc_instance_simple. In doing so the reference count to the algorithm is now maintained by the Crypto API and the caller no longer needs to drop the alg refcount. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-12-20 13:29:40 +08:00
crypto: cbc - convert to skcipher_alloc_instance_simple() The CBC template just wraps a single block cipher algorithm, so simplify it by converting it to use skcipher_alloc_instance_simple(). Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-01-03 20:16:15 -08:00
crypto: skcipher - Add skcipher_ialg_simple helper This patch introduces the skcipher_ialg_simple helper which fetches the crypto_alg structure from a simple skcipher instance's spawn. This allows us to remove the third argument from the function skcipher_alloc_instance_simple. In doing so the reference count to the algorithm is now maintained by the Crypto API and the caller no longer needs to drop the alg refcount. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-12-20 13:29:40 +08:00
crypto: cbc - convert to skcipher_alloc_instance_simple() The CBC template just wraps a single block cipher algorithm, so simplify it by converting it to use skcipher_alloc_instance_simple(). Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-01-03 20:16:15 -08:00
[CRYPTO] cipher: Added block ciphers for CBC/ECB This patch adds two block cipher algorithms, CBC and ECB. These are implemented as templates on top of existing single-block cipher algorithms. They invoke the single-block cipher through the new encrypt_one/decrypt_one interface. This also optimises the in-place encryption and decryption to remove the cost of an IV copy each round. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21 11:44:08 +10:00
crypto: cbc - Convert to skcipher This patch converts cbc over to the skcipher interface. It also rearranges the code to allow it to be reused by drivers. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-22 20:08:39 +08:00
[CRYPTO] cipher: Added block ciphers for CBC/ECB This patch adds two block cipher algorithms, CBC and ECB. These are implemented as templates on top of existing single-block cipher algorithms. They invoke the single-block cipher through the new encrypt_one/decrypt_one interface. This also optimises the in-place encryption and decryption to remove the cost of an IV copy each round. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21 11:44:08 +10:00
crypto: run initcalls for generic implementations earlier Use subsys_initcall for registration of all templates and generic algorithm implementations, rather than module_init. Then change cryptomgr to use arch_initcall, to place it before the subsys_initcalls. This is needed so that when both a generic and optimized implementation of an algorithm are built into the kernel (not loadable modules), the generic implementation is registered before the optimized one. Otherwise, the self-tests for the optimized implementation are unable to allocate the generic implementation for the new comparison fuzz tests. Note that on arm, a side effect of this change is that self-tests for generic implementations may run before the unaligned access handler has been installed. So, unaligned accesses will crash the kernel. This is arguably a good thing as it makes it easier to detect that type of bug. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-04-11 21:57:42 -07:00
[CRYPTO] cipher: Added block ciphers for CBC/ECB This patch adds two block cipher algorithms, CBC and ECB. These are implemented as templates on top of existing single-block cipher algorithms. They invoke the single-block cipher through the new encrypt_one/decrypt_one interface. This also optimises the in-place encryption and decryption to remove the cost of an IV copy each round. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-09-21 11:44:08 +10:00
crypto: cbc - convert to skcipher_alloc_instance_simple() The CBC template just wraps a single block cipher algorithm, so simplify it by converting it to use skcipher_alloc_instance_simple(). Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-01-03 20:16:15 -08:00
crypto: include crypto- module prefix in template This adds the module loading prefix "crypto-" to the template lookup as well. For example, attempting to load 'vfat(blowfish)' via AF_ALG now correctly includes the "crypto-" prefix at every level, correctly rejecting "vfat": net-pf-38 algif-hash crypto-vfat(blowfish) crypto-vfat(blowfish)-all crypto-vfat Reported-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-11-24 16:32:38 -08:00