[RFC][PATCH 02/10] crypto: Export signature encoding information
From: Roberto Sassu <hidden>
Date: 2023-07-06 14:46:05
Also in:
bpf, keyrings, linux-crypto, linux-integrity, linux-kselftest, linux-security-module, lkml
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", Linus Torvalds
From: Roberto Sassu <roberto.sassu@huawei.com> Export the signature encoding identifiers, so that user space can reference them when passing data to the kernel. Define and export the sig_enc_name array, so that kernel subsystems can get the string associated to the signature encoding identifier. Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com> --- crypto/Kconfig | 3 +++ crypto/Makefile | 1 + crypto/sig_enc_info.c | 16 ++++++++++++++++ include/crypto/sig_enc_info.h | 15 +++++++++++++++ include/uapi/linux/sig_enc_info.h | 18 ++++++++++++++++++ 5 files changed, 53 insertions(+) create mode 100644 crypto/sig_enc_info.c create mode 100644 include/crypto/sig_enc_info.h create mode 100644 include/uapi/linux/sig_enc_info.h
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 2558025461b..ef6f1e4c5b4 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig@@ -1423,6 +1423,9 @@ config CRYPTO_HASH_INFO config CRYPTO_PUB_KEY_INFO bool +config CRYPTO_SIG_ENC_INFO + bool + if !KMSAN # avoid false positives from assembly if ARM source "arch/arm/crypto/Kconfig"
diff --git a/crypto/Makefile b/crypto/Makefile
index fcdb5918e58..6d84fadfeda 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile@@ -207,6 +207,7 @@ obj-$(CONFIG_ASYNC_CORE) += async_tx/ obj-$(CONFIG_ASYMMETRIC_KEY_TYPE) += asymmetric_keys/ obj-$(CONFIG_CRYPTO_HASH_INFO) += hash_info.o obj-$(CONFIG_CRYPTO_PUB_KEY_INFO) += pub_key_info.o +obj-$(CONFIG_CRYPTO_SIG_ENC_INFO) += sig_enc_info.o crypto_simd-y := simd.o obj-$(CONFIG_CRYPTO_SIMD) += crypto_simd.o
diff --git a/crypto/sig_enc_info.c b/crypto/sig_enc_info.c
new file mode 100644
index 00000000000..649cf98385f
--- /dev/null
+++ b/crypto/sig_enc_info.c@@ -0,0 +1,16 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2023 Huawei Technologies Duesseldorf GmbH + * + * Sig enc info: Signature encoding information + */ + +#include <linux/export.h> +#include <crypto/sig_enc_info.h> + +const char *const sig_enc_name[SIG_ENC__LAST] = { + [SIG_ENC_PKCS1] = "pkcs1", + [SIG_ENC_X962] = "x962", + [SIG_ENC_RAW] = "raw", +}; +EXPORT_SYMBOL_GPL(sig_enc_name);
diff --git a/include/crypto/sig_enc_info.h b/include/crypto/sig_enc_info.h
new file mode 100644
index 00000000000..6e28890a0e4
--- /dev/null
+++ b/include/crypto/sig_enc_info.h@@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * Copyright (C) 2023 Huawei Technologies Duesseldorf GmbH + * + * Sig enc info: Signature encoding information + */ + +#ifndef _CRYPTO_SIG_ENC_INFO_H +#define _CRYPTO_SIG_ENC_INFO_H + +#include <uapi/linux/sig_enc_info.h> + +extern const char *const sig_enc_name[SIG_ENC__LAST]; + +#endif /* _CRYPTO_SIG_ENC_INFO_H */
diff --git a/include/uapi/linux/sig_enc_info.h b/include/uapi/linux/sig_enc_info.h
new file mode 100644
index 00000000000..0a2ac028bef
--- /dev/null
+++ b/include/uapi/linux/sig_enc_info.h@@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * Copyright (C) 2023 Huawei Technologies Duesseldorf GmbH + * + * Sig enc info: Signature encoding information + */ + +#ifndef _UAPI_LINUX_SIG_ENC_INFO_H +#define _UAPI_LINUX_SIG_ENC_INFO_H + +enum sig_enc_info { + SIG_ENC_PKCS1, + SIG_ENC_X962, + SIG_ENC_RAW, + SIG_ENC__LAST, +}; + +#endif /* _UAPI_LINUX_SIG_ENC_INFO_H */
--
2.34.1