diff --git a/app/src/util/binary.h b/app/src/util/binary.h
index 6dc1b58e..c28d6e18 100644
--- a/app/src/util/binary.h
+++ b/app/src/util/binary.h
@@ -13,6 +13,12 @@ sc_write16be(uint8_t *buf, uint16_t value) {
     buf[1] = value;
 }
 
+static inline void
+sc_write16le(uint8_t *buf, uint16_t value) {
+    buf[0] = value;
+    buf[1] = value >> 8;
+}
+
 static inline void
 sc_write32be(uint8_t *buf, uint32_t value) {
     buf[0] = value >> 24;
@@ -21,12 +27,26 @@ sc_write32be(uint8_t *buf, uint32_t value) {
     buf[3] = value;
 }
 
+static inline void
+sc_write32le(uint8_t *buf, uint32_t value) {
+    buf[0] = value;
+    buf[1] = value >> 8;
+    buf[2] = value >> 16;
+    buf[3] = value >> 24;
+}
+
 static inline void
 sc_write64be(uint8_t *buf, uint64_t value) {
     sc_write32be(buf, value >> 32);
     sc_write32be(&buf[4], (uint32_t) value);
 }
 
+static inline void
+sc_write64le(uint8_t *buf, uint64_t value) {
+    sc_write32le(buf, (uint32_t) value);
+    sc_write32le(buf, value >> 32);
+}
+
 static inline uint16_t
 sc_read16be(const uint8_t *buf) {
     return (buf[0] << 8) | buf[1];