diff --git a/common/sha2.c b/common/sha2.c
index 82accc08..c7214345 100644
--- a/common/sha2.c
+++ b/common/sha2.c
@@ -529,10 +529,22 @@ void sha512_inc_init(sha512ctx *state) {
     }
 }
 
+void sha224_inc_clone_state(sha224ctx *stateout, const sha224ctx *statein) {
+    memcpy(stateout, statein, sizeof(sha224ctx));
+}
+
 void sha256_inc_clone_state(sha256ctx *stateout, const sha256ctx *statein) {
     memcpy(stateout, statein, sizeof(sha256ctx));
 }
 
+void sha384_inc_clone_state(sha384ctx *stateout, const sha384ctx *statein) {
+    memcpy(stateout, statein, sizeof(sha384ctx));
+}
+
+void sha512_inc_clone_state(sha512ctx *stateout, const sha512ctx *statein) {
+    memcpy(stateout, statein, sizeof(sha512ctx));
+}
+
 void sha256_inc_blocks(sha256ctx *state, const uint8_t *in, size_t inblocks) {
     uint64_t bytes = load_bigendian_64(state->ctx + 32);
 
diff --git a/common/sha2.h b/common/sha2.h
index b6bdd6a6..b7334810 100644
--- a/common/sha2.h
+++ b/common/sha2.h
@@ -25,6 +25,7 @@ typedef struct {
 } sha512ctx;
 
 void sha224_inc_init(sha224ctx *state);
+void sha224_inc_clone_state(sha224ctx *stateout, const sha224ctx *statein);
 void sha224_inc_blocks(sha224ctx *state, const uint8_t *in, size_t inblocks);
 void sha224_inc_finalize(uint8_t *out, sha224ctx *state, const uint8_t *in, size_t inlen);
 void sha224(uint8_t *out, const uint8_t *in, size_t inlen);
@@ -36,11 +37,13 @@ void sha256_inc_finalize(uint8_t *out, sha256ctx *state, const uint8_t *in, size
 void sha256(uint8_t *out, const uint8_t *in, size_t inlen);
 
 void sha384_inc_init(sha384ctx *state);
+void sha384_inc_clone_state(sha384ctx *stateout, const sha384ctx *statein);
 void sha384_inc_blocks(sha384ctx *state, const uint8_t *in, size_t inblocks);
 void sha384_inc_finalize(uint8_t *out, sha384ctx *state, const uint8_t *in, size_t inlen);
 void sha384(uint8_t *out, const uint8_t *in, size_t inlen);
 
 void sha512_inc_init(sha512ctx *state);
+void sha512_inc_clone_state(sha512ctx *stateout, const sha512ctx *statein);
 void sha512_inc_blocks(sha512ctx *state, const uint8_t *in, size_t inblocks);
 void sha512_inc_finalize(uint8_t *out, sha512ctx *state, const uint8_t *in, size_t inlen);
 void sha512(uint8_t *out, const uint8_t *in, size_t inlen);