2 files changed, 17 insertions, 0 deletions
diff --git a/common/sha1.c b/common/sha1.c
index 0666837..d2005b9 100644
--- a/common/sha1.c
+++ b/common/sha1.c
@@ -161,4 +161,19 @@ void sha1_final(uchar digest[20], sha1_ctx_t* context)
 #endif
 }
 
+void
+sha1_string(unsigned char digest[SHA1_LEN], const char* str)
+{
+  sha1_ctx_t sha1;
+  sha1_init(&sha1);
+  sha1_update(&sha1, str, strlen(str));
+  sha1_final(digest, &sha1);
+}
 
+int
+sha1_strcmp(unsigned char digest[SHA1_LEN], const char* str)
+{
+  unsigned char other[SHA1_LEN];
+  sha1_string(other, str);
+  return memcmp(digest, other, SHA1_LEN);
+}
diff --git a/common/sha1.h b/common/sha1.h
index 37f734f..208b7f2 100644
--- a/common/sha1.h
+++ b/common/sha1.h
@@ -22,6 +22,8 @@ sha1_ctx_t;
 void sha1_init(sha1_ctx_t* context);
 void sha1_update(sha1_ctx_t* context, const void* data, unsigned int len);
 void sha1_final(unsigned char digest[SHA1_LEN], sha1_ctx_t* context);
+void sha1_string(unsigned char digest[SHA1_LEN], const char* str);
+int sha1_strcmp(unsigned char digest[SHA1_LEN], const char* str);
 
 #ifdef __cplusplus
 }