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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 09:51:24 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 09:51:24 +0000
commitf7548d6d28c313cf80e6f3ef89aed16a19815df1 (patch)
treea3f6f2a3f247293bee59ecd28e8cd8ceb6ca064a /src/lib/hmac-cram-md5.c
parentInitial commit. (diff)
downloaddovecot-f7548d6d28c313cf80e6f3ef89aed16a19815df1.tar.xz
dovecot-f7548d6d28c313cf80e6f3ef89aed16a19815df1.zip
Adding upstream version 1:2.3.19.1+dfsg1.upstream/1%2.3.19.1+dfsg1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--src/lib/hmac-cram-md5.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/src/lib/hmac-cram-md5.c b/src/lib/hmac-cram-md5.c
new file mode 100644
index 0000000..46d73c4
--- /dev/null
+++ b/src/lib/hmac-cram-md5.c
@@ -0,0 +1,65 @@
+/*
+ * CRAM-MD5 (RFC 2195) compatibility code
+ * Copyright (c) 2003 Joshua Goodall <joshua@roughtrade.net>
+ *
+ * This software is released under the MIT license.
+ */
+
+#include "lib.h"
+#include "md5.h"
+#include "hmac-cram-md5.h"
+
+void hmac_md5_get_cram_context(struct hmac_context *_hmac_ctx,
+ unsigned char context_digest[CRAM_MD5_CONTEXTLEN])
+{
+ struct hmac_context_priv *hmac_ctx = &_hmac_ctx->u.priv;
+ unsigned char *cdp;
+
+ struct md5_context *ctx = (void*)hmac_ctx->ctx;
+ struct md5_context *ctxo = (void*)hmac_ctx->ctxo;
+
+#define CDPUT(p, c) STMT_START { \
+ *(p)++ = (c) & 0xff; \
+ *(p)++ = (c) >> 8 & 0xff; \
+ *(p)++ = (c) >> 16 & 0xff; \
+ *(p)++ = (c) >> 24 & 0xff; \
+} STMT_END
+ cdp = context_digest;
+ CDPUT(cdp, ctxo->a);
+ CDPUT(cdp, ctxo->b);
+ CDPUT(cdp, ctxo->c);
+ CDPUT(cdp, ctxo->d);
+ CDPUT(cdp, ctx->a);
+ CDPUT(cdp, ctx->b);
+ CDPUT(cdp, ctx->c);
+ CDPUT(cdp, ctx->d);
+}
+
+void hmac_md5_set_cram_context(struct hmac_context *_hmac_ctx,
+ const unsigned char context_digest[CRAM_MD5_CONTEXTLEN])
+{
+ struct hmac_context_priv *hmac_ctx = &_hmac_ctx->u.priv;
+ const unsigned char *cdp;
+
+ struct md5_context *ctx = (void*)hmac_ctx->ctx;
+ struct md5_context *ctxo = (void*)hmac_ctx->ctxo;
+
+#define CDGET(p, c) STMT_START { \
+ (c) = (*p++); \
+ (c) += (*p++ << 8); \
+ (c) += (*p++ << 16); \
+ (c) += ((uint32_t)(*p++) << 24); \
+} STMT_END
+ cdp = context_digest;
+ CDGET(cdp, ctxo->a);
+ CDGET(cdp, ctxo->b);
+ CDGET(cdp, ctxo->c);
+ CDGET(cdp, ctxo->d);
+ CDGET(cdp, ctx->a);
+ CDGET(cdp, ctx->b);
+ CDGET(cdp, ctx->c);
+ CDGET(cdp, ctx->d);
+
+ ctxo->lo = ctx->lo = 64;
+ ctxo->hi = ctx->hi = 0;
+}