diff --git a/arch/arm/cpu/tegra20-common/crypto.c b/arch/arm/cpu/tegra20-common/crypto.c
index b18e67c..0967f3e 100644
--- a/arch/arm/cpu/tegra20-common/crypto.c
+++ b/arch/arm/cpu/tegra20-common/crypto.c
@@ -74,11 +74,11 @@ static void sign_object(u8 *key, u8 *key_schedule, u8 *src, u8 *dst,
 	/* compute the AES-CMAC value */
 	for (i = 0; i < num_aes_blocks; i++) {
 		/* Apply the chain data */
-		apply_cbc_chain_data(cbc_chain_data, src, tmp_data);
+		aes_apply_cbc_chain_data(cbc_chain_data, src, tmp_data);
 
 		/* for the final block, XOR K1 into the IV */
 		if (i == num_aes_blocks - 1)
-			apply_cbc_chain_data(tmp_data, k1, tmp_data);
+			aes_apply_cbc_chain_data(tmp_data, k1, tmp_data);
 
 		/* encrypt the AES block */
 		aes_encrypt(tmp_data, key_schedule, dst);
diff --git a/include/aes.h b/include/aes.h
index ee0e6c2..6315c02 100644
--- a/include/aes.h
+++ b/include/aes.h
@@ -61,6 +61,17 @@ void aes_encrypt(u8 *in, u8 *expkey, u8 *out);
 void aes_decrypt(u8 *in, u8 *expkey, u8 *out);
 
 /**
+ * Apply chain data to the destination using EOR
+ *
+ * Each array is of length AES_KEY_LENGTH.
+ *
+ * @cbc_chain_data	Chain data
+ * @src			Source data
+ * @dst			Destination data, which is modified here
+ */
+void aes_apply_cbc_chain_data(u8 *cbc_chain_data, u8 *src, u8 *dst);
+
+/**
  * aes_cbc_encrypt_blocks() - Encrypt multiple blocks of data with AES CBC.
  *
  * @key_exp		Expanded key to use
diff --git a/lib/aes.c b/lib/aes.c
index 05c97cd..9d7a0a1 100644
--- a/lib/aes.c
+++ b/lib/aes.c
@@ -593,16 +593,7 @@ static void debug_print_vector(char *name, u32 num_bytes, u8 *data)
 #endif
 }
 
-/**
- * Apply chain data to the destination using EOR
- *
- * Each array is of length AES_KEY_LENGTH.
- *
- * @cbc_chain_data	Chain data
- * @src			Source data
- * @dst			Destination data, which is modified here
- */
-static void apply_cbc_chain_data(u8 *cbc_chain_data, u8 *src, u8 *dst)
+void aes_apply_cbc_chain_data(u8 *cbc_chain_data, u8 *src, u8 *dst)
 {
 	int i;
 
@@ -623,7 +614,7 @@ void aes_cbc_encrypt_blocks(u8 *key_exp, u8 *src, u8 *dst, u32 num_aes_blocks)
 		debug_print_vector("AES Src", AES_KEY_LENGTH, src);
 
 		/* Apply the chain data */
-		apply_cbc_chain_data(cbc_chain_data, src, tmp_data);
+		aes_apply_cbc_chain_data(cbc_chain_data, src, tmp_data);
 		debug_print_vector("AES Xor", AES_KEY_LENGTH, tmp_data);
 
 		/* Encrypt the AES block */
@@ -655,7 +646,7 @@ void aes_cbc_decrypt_blocks(u8 *key_exp, u8 *src, u8 *dst, u32 num_aes_blocks)
 		debug_print_vector("AES Xor", AES_KEY_LENGTH, tmp_data);
 
 		/* Apply the chain data */
-		apply_cbc_chain_data(cbc_chain_data, tmp_data, dst);
+		aes_apply_cbc_chain_data(cbc_chain_data, tmp_data, dst);
 		debug_print_vector("AES Dst", AES_KEY_LENGTH, dst);
 
 		/* Update pointers for next loop. */