diff --git a/auth_hmac.c b/auth_hmac.c
index f3f7956..44c9e6b 100644
--- a/auth_hmac.c
+++ b/auth_hmac.c
@@ -116,19 +116,19 @@ hmac_auth(uint8_t *out, size_t *outlen, void *initparams, const uint8_t *in,
 }
 
 
-static struct lc_auth_impl	hmac_impl = {
-	.init = &hmac_init,
-	.update = &hmac_update,
-	.final = &hmac_final,
-	.auth = &hmac_auth,
-
-	.argsz = sizeof(struct hmac_state),
-	.blocklen = 0,
-	.taglen = 0,
-};
-
 const struct lc_auth_impl *
 lc_auth_impl_hmac(void)
 {
+	static struct lc_auth_impl	hmac_impl = {
+		.init = &hmac_init,
+		.update = &hmac_update,
+		.final = &hmac_final,
+		.auth = &hmac_auth,
+
+		.argsz = sizeof(struct hmac_state),
+		.blocklen = 0,
+		.taglen = 0,
+	};
+
 	return &hmac_impl;
 }
diff --git a/auth_poly1305.c b/auth_poly1305.c
index ca7960a..ce705e4 100644
--- a/auth_poly1305.c
+++ b/auth_poly1305.c
@@ -151,19 +151,19 @@ poly1305_auth(uint8_t *out, size_t *outlen, void *initparams,
 }
 
 
-static struct lc_auth_impl	poly1305_impl = {
-	.init = &poly1305_init,
-	.update = &poly1305_update,
-	.final = &poly1305_final,
-	.auth = &poly1305_auth,
-
-	.argsz = sizeof(struct poly1305_state),
-	.blocklen = LC_POLY1305_BLOCKLEN,
-	.taglen = LC_POLY1305_TAGLEN,
-};
-
 const struct lc_auth_impl *
 lc_auth_impl_poly1305(void)
 {
+	static struct lc_auth_impl	poly1305_impl = {
+		.init = &poly1305_init,
+		.update = &poly1305_update,
+		.final = &poly1305_final,
+		.auth = &poly1305_auth,
+
+		.argsz = sizeof(struct poly1305_state),
+		.blocklen = LC_POLY1305_BLOCKLEN,
+		.taglen = LC_POLY1305_TAGLEN,
+	};
+
 	return &poly1305_impl;
 }
diff --git a/cipher_chacha20.c b/cipher_chacha20.c
index dbc480e..786e645 100644
--- a/cipher_chacha20.c
+++ b/cipher_chacha20.c
@@ -240,44 +240,44 @@ xchacha20_anycrypt(uint8_t *out, size_t *outlen, void *initparams,
 }
 
 
-static struct lc_cipher_impl	chacha20_impl = {
-	.encrypt_init = &chacha20_anycrypt_init,
-	.encrypt_update = &chacha20_anycrypt_update,
-	.encrypt_final = &chacha20_anycrypt_final,
-	.encrypt = &chacha20_anycrypt,
-
-	.decrypt_init = &chacha20_anycrypt_init,
-	.decrypt_update = &chacha20_anycrypt_update,
-	.decrypt_final = &chacha20_anycrypt_final,
-	.decrypt = &chacha20_anycrypt,
-
-	.argsz = sizeof(struct chacha20_state),
-	.blocklen = LC_CHACHA20_BLOCKLEN,
-};
-
-static struct lc_cipher_impl	xchacha20_impl = {
-	.encrypt_init = &xchacha20_anycrypt_init,
-	.encrypt_update = &chacha20_anycrypt_update,
-	.encrypt_final = &chacha20_anycrypt_final,
-	.encrypt = &xchacha20_anycrypt,
-
-	.decrypt_init = &xchacha20_anycrypt_init,
-	.decrypt_update = &chacha20_anycrypt_update,
-	.decrypt_final = &chacha20_anycrypt_final,
-	.decrypt = &xchacha20_anycrypt,
-
- 	.argsz = sizeof(struct chacha20_state),
-	.blocklen = LC_XCHACHA20_BLOCKLEN,
-};
-
 const struct lc_cipher_impl *
 lc_cipher_impl_chacha20(void)
 {
+	static struct lc_cipher_impl	chacha20_impl = {
+		.encrypt_init = &chacha20_anycrypt_init,
+		.encrypt_update = &chacha20_anycrypt_update,
+		.encrypt_final = &chacha20_anycrypt_final,
+		.encrypt = &chacha20_anycrypt,
+
+		.decrypt_init = &chacha20_anycrypt_init,
+		.decrypt_update = &chacha20_anycrypt_update,
+		.decrypt_final = &chacha20_anycrypt_final,
+		.decrypt = &chacha20_anycrypt,
+
+		.argsz = sizeof(struct chacha20_state),
+		.blocklen = LC_CHACHA20_BLOCKLEN,
+	};
+
 	return &chacha20_impl;
 }
 
 const struct lc_cipher_impl *
 lc_cipher_impl_xchacha20(void)
 {
+	static struct lc_cipher_impl	xchacha20_impl = {
+		.encrypt_init = &xchacha20_anycrypt_init,
+		.encrypt_update = &chacha20_anycrypt_update,
+		.encrypt_final = &chacha20_anycrypt_final,
+		.encrypt = &xchacha20_anycrypt,
+
+		.decrypt_init = &xchacha20_anycrypt_init,
+		.decrypt_update = &chacha20_anycrypt_update,
+		.decrypt_final = &chacha20_anycrypt_final,
+		.decrypt = &xchacha20_anycrypt,
+
+		.argsz = sizeof(struct chacha20_state),
+		.blocklen = LC_XCHACHA20_BLOCKLEN,
+	};
+
 	return &xchacha20_impl;
 }
diff --git a/hash_sha224_sha256.c b/hash_sha224_sha256.c
index 0e64357..3ddf490 100644
--- a/hash_sha224_sha256.c
+++ b/hash_sha224_sha256.c
@@ -252,36 +252,36 @@ sha256_hash(uint8_t *out, size_t *outlen, const uint8_t *in, size_t inlen)
 }
 
 
-static struct lc_hash_impl	sha224_impl = {
-	.init = &sha224_init,
-	.update = &sha224_update,
-	.final = &sha224_final,
-	.hash = &sha224_hash,
-
-	.argsz = sizeof(struct sha256_state),
-	.blocklen = LC_SHA224_BLOCKLEN,
-	.hashlen = LC_SHA224_HASHLEN,
-};
-
-static struct lc_hash_impl	sha256_impl = {
-	.init = &sha256_init,
-	.update = &sha256_update,
-	.final = &sha256_final,
-	.hash = &sha256_hash,
-
-	.argsz = sizeof(struct sha256_state),
-	.blocklen = LC_SHA256_BLOCKLEN,
-	.hashlen = LC_SHA256_HASHLEN,
-};
-
 const struct lc_hash_impl *
 lc_hash_impl_sha224(void)
 {
+	static struct lc_hash_impl	sha224_impl = {
+		.init = &sha224_init,
+		.update = &sha224_update,
+		.final = &sha224_final,
+		.hash = &sha224_hash,
+
+		.argsz = sizeof(struct sha256_state),
+		.blocklen = LC_SHA224_BLOCKLEN,
+		.hashlen = LC_SHA224_HASHLEN,
+	};
+
 	return &sha224_impl;
 }
 
 const struct lc_hash_impl *
 lc_hash_impl_sha256(void)
 {
+	static struct lc_hash_impl	sha256_impl = {
+		.init = &sha256_init,
+		.update = &sha256_update,
+		.final = &sha256_final,
+		.hash = &sha256_hash,
+
+		.argsz = sizeof(struct sha256_state),
+		.blocklen = LC_SHA256_BLOCKLEN,
+		.hashlen = LC_SHA256_HASHLEN,
+	};
+
 	return &sha256_impl;
 }
diff --git a/hash_sha384_sha512.c b/hash_sha384_sha512.c
index 320ba9c..934ae77 100644
--- a/hash_sha384_sha512.c
+++ b/hash_sha384_sha512.c
@@ -257,36 +257,36 @@ sha512_hash(uint8_t *out, size_t *outlen, const uint8_t *in, size_t inlen)
 }
 
 
-static struct lc_hash_impl	sha384_impl = {
-	.init = &sha384_init,
-	.update = &sha384_update,
-	.final = &sha384_final,
-	.hash = &sha384_hash,
-
-	.argsz = sizeof(struct sha512_state),
-	.blocklen = LC_SHA384_BLOCKLEN,
-	.hashlen = LC_SHA384_HASHLEN,
-};
-
-static struct lc_hash_impl	sha512_impl = {
-	.init = &sha512_init,
-	.update = &sha512_update,
-	.final = &sha512_final,
-	.hash = &sha512_hash,
-
-	.argsz = sizeof(struct sha512_state),
-	.blocklen = LC_SHA512_BLOCKLEN,
-	.hashlen = LC_SHA512_HASHLEN,
-};
-
 const struct lc_hash_impl *
 lc_hash_impl_sha384(void)
 {
+	static struct lc_hash_impl	sha384_impl = {
+		.init = &sha384_init,
+		.update = &sha384_update,
+		.final = &sha384_final,
+		.hash = &sha384_hash,
+
+		.argsz = sizeof(struct sha512_state),
+		.blocklen = LC_SHA384_BLOCKLEN,
+		.hashlen = LC_SHA384_HASHLEN,
+	};
+
 	return &sha384_impl;
 }
 
 const struct lc_hash_impl *
 lc_hash_impl_sha512(void)
 {
+	static struct lc_hash_impl	sha512_impl = {
+		.init = &sha512_init,
+		.update = &sha512_update,
+		.final = &sha512_final,
+		.hash = &sha512_hash,
+
+		.argsz = sizeof(struct sha512_state),
+		.blocklen = LC_SHA512_BLOCKLEN,
+		.hashlen = LC_SHA512_HASHLEN,
+	};
+
 	return &sha512_impl;
 }