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-rw-r--r--lib/Kconfig3
-rw-r--r--lib/hexdump.c16
2 files changed, 18 insertions, 1 deletions
diff --git a/lib/Kconfig b/lib/Kconfig
index 334f7722a999..a8a775730c09 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -451,7 +451,8 @@ config MPILIB
config SIGNATURE
tristate
- depends on KEYS && CRYPTO
+ depends on KEYS
+ select CRYPTO
select CRYPTO_SHA1
select MPILIB
help
diff --git a/lib/hexdump.c b/lib/hexdump.c
index 8499c810909a..270773b91923 100644
--- a/lib/hexdump.c
+++ b/lib/hexdump.c
@@ -59,6 +59,22 @@ int hex2bin(u8 *dst, const char *src, size_t count)
EXPORT_SYMBOL(hex2bin);
/**
+ * bin2hex - convert binary data to an ascii hexadecimal string
+ * @dst: ascii hexadecimal result
+ * @src: binary data
+ * @count: binary data length
+ */
+char *bin2hex(char *dst, const void *src, size_t count)
+{
+ const unsigned char *_src = src;
+
+ while (count--)
+ dst = hex_byte_pack(dst, *_src++);
+ return dst;
+}
+EXPORT_SYMBOL(bin2hex);
+
+/**
* hex_dump_to_buffer - convert a blob of data to "hex ASCII" in memory
* @buf: data blob to dump
* @len: number of bytes in the @buf