diff --git a/fs/crypto/fscrypt_private.h b/fs/crypto/fscrypt_private.h
index d36a648cb2bb..c73962a3c59f 100644
--- a/fs/crypto/fscrypt_private.h
+++ b/fs/crypto/fscrypt_private.h
@@ -90,6 +90,10 @@ static inline bool fscrypt_valid_enc_modes(u32 contents_mode,
 	    filenames_mode == FS_ENCRYPTION_MODE_AES_256_CTS)
 		return true;
 
+	if (contents_mode == FS_ENCRYPTION_MODE_SPECK128_256_XTS &&
+	    filenames_mode == FS_ENCRYPTION_MODE_SPECK128_256_CTS)
+		return true;
+
 	return false;
 }
 
diff --git a/fs/crypto/keyinfo.c b/fs/crypto/keyinfo.c
index aae68c0924f1..2258f402858b 100644
--- a/fs/crypto/keyinfo.c
+++ b/fs/crypto/keyinfo.c
@@ -134,6 +134,8 @@ static const struct {
 					     FS_AES_128_CBC_KEY_SIZE },
 	[FS_ENCRYPTION_MODE_AES_128_CTS] = { "cts(cbc(aes))",
 					     FS_AES_128_CTS_KEY_SIZE },
+	[FS_ENCRYPTION_MODE_SPECK128_256_XTS] = { "xts(speck128)",	64 },
+	[FS_ENCRYPTION_MODE_SPECK128_256_CTS] = { "cts(cbc(speck128))",	32 },
 };
 
 static int determine_cipher_type(struct fscrypt_info *ci, struct inode *inode,
diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
index 7683188755b1..5ebe952805d3 100644
--- a/include/uapi/linux/fs.h
+++ b/include/uapi/linux/fs.h
@@ -272,6 +272,8 @@ struct fsxattr {
 #define FS_ENCRYPTION_MODE_AES_256_CTS		4
 #define FS_ENCRYPTION_MODE_AES_128_CBC		5
 #define FS_ENCRYPTION_MODE_AES_128_CTS		6
+#define FS_ENCRYPTION_MODE_SPECK128_256_XTS	7
+#define FS_ENCRYPTION_MODE_SPECK128_256_CTS	8
 
 struct fscrypt_policy {
 	__u8 version;