diff --git a/common/cmd_blob.c b/common/cmd_blob.c
index 82ecaf09e5..d3f22a1afc 100644
--- a/common/cmd_blob.c
+++ b/common/cmd_blob.c
@@ -90,17 +90,19 @@ static char blob_help_text[] =
 	"enc src dst len km - Encapsulate and create blob of data\n"
 	"                          $len bytes long at address $src and\n"
 	"                          store the result at address $dst.\n"
-	"                          $km is the 16 byte key modifier\n"
-	"                          is also required for generation/use as\n"
-	"                          key for cryptographic operation. Key\n"
-	"                          modifier should be 16 byte long.\n"
+	"                          $km is the address where the key\n"
+	"                          modifier is stored.\n"
+	"                          The modifier is required for generation\n"
+	"                          /use as key for cryptographic operation.\n"
+	"                          Key modifier should be 16 byte long.\n"
 	"blob dec src dst len km - Decapsulate the  blob of data at address\n"
 	"                          $src and store result of $len byte at\n"
 	"                          addr $dst.\n"
-	"                          $km is the 16 byte key modifier\n"
-	"                          is also required for generation/use as\n"
-	"                          key for cryptographic operation. Key\n"
-	"                          modifier should be 16 byte long.\n";
+	"                          $km is the address where the key\n"
+	"                          modifier is stored.\n"
+	"                          The modifier is required for generation\n"
+	"                          /use as key for cryptographic operation.\n"
+	"                          Key modifier should be 16 byte long.\n";
 
 U_BOOT_CMD(
 	blob, 6, 1, do_blob,
diff --git a/drivers/crypto/fsl/fsl_blob.c b/drivers/crypto/fsl/fsl_blob.c
index bc0107521c..9923bcbfe9 100644
--- a/drivers/crypto/fsl/fsl_blob.c
+++ b/drivers/crypto/fsl/fsl_blob.c
@@ -11,7 +11,7 @@
 #include "desc.h"
 #include "jr.h"
 
-int blob_decrypt(u8 *key_mod, u8 *src, u8 *dst, u8 len)
+int blob_decap(u8 *key_mod, u8 *src, u8 *dst, u32 len)
 {
 	int ret, i = 0;
 	u32 *desc;
@@ -36,7 +36,7 @@ int blob_decrypt(u8 *key_mod, u8 *src, u8 *dst, u8 len)
 	return ret;
 }
 
-int blob_encrypt(u8 *key_mod, u8 *src, u8 *dst, u8 len)
+int blob_encap(u8 *key_mod, u8 *src, u8 *dst, u32 len)
 {
 	int ret, i = 0;
 	u32 *desc;