mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-11 08:13:04 +00:00
312 lines
8.5 KiB
Diff
312 lines
8.5 KiB
Diff
From 36767c7345161baf0ab125f95c8557f8e24f25db Mon Sep 17 00:00:00 2001
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From: Randy Eckenrode <randy@largeandhighquality.com>
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Date: Tue, 9 Apr 2024 19:28:17 -0400
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Subject: [PATCH 7/8] Add OpenSSL-based CoreCrypto digest functions
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---
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compat/CommonCrypto/CommonDigest.h | 6 +++
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compat/CommonCrypto/CommonDigestSPI.c | 21 +++++++++++
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compat/CommonCrypto/CommonDigestSPI.h | 14 +++++++
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compat/corecrypto/api_defines.h | 10 +++++
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compat/corecrypto/ccdigest.c | 53 +++++++++++++++++++++++++++
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compat/corecrypto/ccdigest.h | 27 ++++++++++++++
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compat/corecrypto/ccdigest_private.h | 19 ++++++++++
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compat/corecrypto/ccsha1.c | 22 +++++++++++
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compat/corecrypto/ccsha1.h | 9 +++++
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compat/corecrypto/ccsha2.c | 22 +++++++++++
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compat/corecrypto/ccsha2.h | 9 +++++
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11 files changed, 212 insertions(+)
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create mode 100644 compat/CommonCrypto/CommonDigest.h
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create mode 100644 compat/CommonCrypto/CommonDigestSPI.c
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create mode 100644 compat/CommonCrypto/CommonDigestSPI.h
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create mode 100644 compat/corecrypto/api_defines.h
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create mode 100644 compat/corecrypto/ccdigest.c
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create mode 100644 compat/corecrypto/ccdigest.h
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create mode 100644 compat/corecrypto/ccdigest_private.h
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create mode 100644 compat/corecrypto/ccsha1.c
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create mode 100644 compat/corecrypto/ccsha1.h
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create mode 100644 compat/corecrypto/ccsha2.c
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create mode 100644 compat/corecrypto/ccsha2.h
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diff --git a/compat/CommonCrypto/CommonDigest.h b/compat/CommonCrypto/CommonDigest.h
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new file mode 100644
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index 0000000..a60eba7
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--- /dev/null
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+++ b/compat/CommonCrypto/CommonDigest.h
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@@ -0,0 +1,6 @@
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+// SPDX-License-Identifier: APSL-2.0
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+// CoreCrypto compatibility shims written by Randy Eckenrode © 2024
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+
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+#pragma once
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+
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+#define CCSHA256_OUTPUT_SIZE 32
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diff --git a/compat/CommonCrypto/CommonDigestSPI.c b/compat/CommonCrypto/CommonDigestSPI.c
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new file mode 100644
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index 0000000..41269fc
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--- /dev/null
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+++ b/compat/CommonCrypto/CommonDigestSPI.c
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@@ -0,0 +1,21 @@
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+// SPDX-License-Identifier: APSL-2.0
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+// CoreCrypto compatibility shims written by Randy Eckenrode © 2024
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+
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+#include "CommonDigestSPI.h"
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+
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+#include <stdlib.h>
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+#include <string.h>
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+
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+#include <corecrypto/ccsha2.h>
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+
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+void CCDigest(int type, const uint8_t* bytes, size_t count, uint8_t* digest) {
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+ if (type != kCCDigestSHA256) {
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+ abort();
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+ }
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+ const struct ccdigest_info* di = ccsha256_di();
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+
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+ ccdigest_di_decl(_di, ctx);
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+ ccdigest_init(di, ctx);
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+ ccdigest_update(di, ctx, count, bytes);
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+ ccdigest_final(di, ctx, digest);
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+}
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diff --git a/compat/CommonCrypto/CommonDigestSPI.h b/compat/CommonCrypto/CommonDigestSPI.h
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new file mode 100644
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index 0000000..172742a
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--- /dev/null
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+++ b/compat/CommonCrypto/CommonDigestSPI.h
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@@ -0,0 +1,14 @@
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+// SPDX-License-Identifier: APSL-2.0
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+// CoreCrypto compatibility shims written by Randy Eckenrode © 2024
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+
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+#pragma once
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+
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+#include <stdint.h>
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+
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+#include <corecrypto/ccdigest.h>
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+#include <cs_blobs.h>
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+
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+
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+#define kCCDigestSHA256 10
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+
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+EXTERN_C void CCDigest(int type, const uint8_t* bytes, size_t count, uint8_t* digest);
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diff --git a/compat/corecrypto/api_defines.h b/compat/corecrypto/api_defines.h
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new file mode 100644
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index 0000000..13d1e7a
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--- /dev/null
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+++ b/compat/corecrypto/api_defines.h
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@@ -0,0 +1,10 @@
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+// SPDX-License-Identifier: APSL-2.0
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+// CoreCrypto compatibility shims written by Randy Eckenrode © 2024
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+
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+#pragma once
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+
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+#ifdef __cplusplus
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+#define EXTERN_C extern "C"
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+#else
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+#define EXTERN_C
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+#endif
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diff --git a/compat/corecrypto/ccdigest.c b/compat/corecrypto/ccdigest.c
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new file mode 100644
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index 0000000..e29dcb8
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--- /dev/null
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+++ b/compat/corecrypto/ccdigest.c
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@@ -0,0 +1,53 @@
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+// SPDX-License-Identifier: APSL-2.0
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+// CoreCrypto compatibility shims written by Randy Eckenrode © 2024
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+
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+#include "ccdigest.h"
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+#include "ccdigest_private.h"
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+
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+#include <stdlib.h>
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+
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+#include <openssl/err.h>
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+
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+
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+struct ccdigest_context* _ccdigest_context_new(void)
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+{
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+ struct ccdigest_context* ctx = malloc(sizeof(struct ccdigest_context));
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+ ctx->context = EVP_MD_CTX_new();
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+ return ctx;
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+}
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+
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+struct ccdigest_info* _ccdigest_newprovider(const char* name)
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+{
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+ struct ccdigest_info* di = malloc(sizeof(struct ccdigest_info));
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+ di->provider = EVP_MD_fetch(NULL, name, NULL);
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+ return di;
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+}
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+
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+void ccdigest_init(const struct ccdigest_info* di, struct ccdigest_context* ctx)
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+{
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+ if (!EVP_DigestInit_ex2(ctx->context, di->provider, NULL)) {
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+ ERR_print_errors_fp(stderr);
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+ abort();
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+ }
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+}
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+
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+void ccdigest_update(
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+ const struct ccdigest_info* _di,
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+ struct ccdigest_context* ctx,
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+ size_t count,
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+ const void* bytes
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+)
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+{
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+ if (!EVP_DigestUpdate(ctx->context, bytes, count)) {
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+ ERR_print_errors_fp(stderr);
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+ abort();
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+ }
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+}
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+
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+void ccdigest_final(const struct ccdigest_info* _di, struct ccdigest_context* ctx, uint8_t* digest)
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+{
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+ if (!EVP_DigestFinal_ex(ctx->context, digest, NULL)) {
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+ ERR_print_errors_fp(stderr);
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+ abort();
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+ }
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+}
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diff --git a/compat/corecrypto/ccdigest.h b/compat/corecrypto/ccdigest.h
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new file mode 100644
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index 0000000..9af2394
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--- /dev/null
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+++ b/compat/corecrypto/ccdigest.h
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@@ -0,0 +1,27 @@
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+// SPDX-License-Identifier: APSL-2.0
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+// CoreCrypto compatibility shims written by Randy Eckenrode © 2024
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+
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+#pragma once
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+
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+#include <stddef.h>
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+#include <stdint.h>
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+
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+#include "api_defines.h"
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+
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+
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+struct ccdigest_info;
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+struct ccdigest_context;
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+
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+EXTERN_C struct ccdigest_context* _ccdigest_context_new(void);
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+
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+#define ccdigest_di_decl(_di, ctxvar) \
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+ struct ccdigest_context* (ctxvar) = _ccdigest_context_new()
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+
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+EXTERN_C void ccdigest_init(const struct ccdigest_info* di, struct ccdigest_context* ctx);
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+EXTERN_C void ccdigest_update(
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+ const struct ccdigest_info* _di,
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+ struct ccdigest_context* ctx,
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+ size_t count,
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+ const void* bytes
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+);
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+EXTERN_C void ccdigest_final(const struct ccdigest_info* _di, struct ccdigest_context* ctx, uint8_t* digest);
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diff --git a/compat/corecrypto/ccdigest_private.h b/compat/corecrypto/ccdigest_private.h
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new file mode 100644
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index 0000000..0ea9759
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--- /dev/null
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+++ b/compat/corecrypto/ccdigest_private.h
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@@ -0,0 +1,19 @@
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+// SPDX-License-Identifier: APSL-2.0
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+// CoreCrypto compatibility shims written by Randy Eckenrode © 2024
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+
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+#pragma once
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+
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+#include "api_defines.h"
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+
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+#include <openssl/evp.h>
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+
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+
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+struct ccdigest_info {
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+ EVP_MD* provider;
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+};
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+
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+struct ccdigest_context {
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+ EVP_MD_CTX* context;
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+};
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+
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+EXTERN_C struct ccdigest_info* _ccdigest_newprovider(const char* name);
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diff --git a/compat/corecrypto/ccsha1.c b/compat/corecrypto/ccsha1.c
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new file mode 100644
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index 0000000..e02b2b6
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--- /dev/null
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+++ b/compat/corecrypto/ccsha1.c
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@@ -0,0 +1,22 @@
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+// SPDX-License-Identifier: APSL-2.0
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+// CoreCrypto compatibility shims written by Randy Eckenrode © 2024
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+
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+#include "ccsha1.h"
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+
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+#include <assert.h>
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+
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+#include <cs_blobs.h>
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+
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+#include "ccdigest_private.h"
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+
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+
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+static struct ccdigest_info* di = NULL;
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+
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+const struct ccdigest_info* ccsha1_di(void)
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+{
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+ if (!di) {
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+ di = _ccdigest_newprovider("SHA-1");
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+ assert(EVP_MD_get_size(di->provider) == CS_SHA1_LEN);
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+ }
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+ return di;
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+}
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diff --git a/compat/corecrypto/ccsha1.h b/compat/corecrypto/ccsha1.h
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new file mode 100644
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index 0000000..8e3f85f
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--- /dev/null
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+++ b/compat/corecrypto/ccsha1.h
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@@ -0,0 +1,9 @@
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+// SPDX-License-Identifier: APSL-2.0
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+// CoreCrypto compatibility shims written by Randy Eckenrode © 2024
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+
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+#pragma once
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+
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+#include <corecrypto/ccdigest.h>
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+
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+
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+EXTERN_C const struct ccdigest_info* ccsha1_di(void);
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diff --git a/compat/corecrypto/ccsha2.c b/compat/corecrypto/ccsha2.c
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new file mode 100644
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index 0000000..6504503
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--- /dev/null
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+++ b/compat/corecrypto/ccsha2.c
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@@ -0,0 +1,22 @@
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+// SPDX-License-Identifier: APSL-2.0
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+// CoreCrypto compatibility shims written by Randy Eckenrode © 2024
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+
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+#include "ccsha2.h"
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+
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+#include <assert.h>
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+
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+#include <cs_blobs.h>
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+
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+#include "ccdigest_private.h"
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+
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+
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+static struct ccdigest_info* di = NULL;
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+
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+const struct ccdigest_info* ccsha256_di(void)
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+{
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+ if (!di) {
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+ di = _ccdigest_newprovider("SHA-256");
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+ assert(EVP_MD_get_size(di->provider) == CS_SHA256_LEN);
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+ }
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+ return di;
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+}
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diff --git a/compat/corecrypto/ccsha2.h b/compat/corecrypto/ccsha2.h
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new file mode 100644
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index 0000000..9f30e03
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--- /dev/null
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+++ b/compat/corecrypto/ccsha2.h
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@@ -0,0 +1,9 @@
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+// SPDX-License-Identifier: APSL-2.0
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+// CoreCrypto compatibility shims written by Randy Eckenrode © 2024
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+
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+#pragma once
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+
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+#include <corecrypto/ccdigest.h>
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+
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+
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+EXTERN_C const struct ccdigest_info* ccsha256_di(void);
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--
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2.45.1
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