diff --git a/crypto/Kconfig b/crypto/Kconfig
index 89b728c72f07..e8488b8c45e3 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -302,7 +302,7 @@ config CRYPTO_ECDSA
 config CRYPTO_ECRDSA
 	tristate "EC-RDSA (Elliptic Curve Russian Digital Signature Algorithm)"
 	select CRYPTO_ECC
-	select CRYPTO_AKCIPHER
+	select CRYPTO_SIG
 	select CRYPTO_STREEBOG
 	select OID_REGISTRY
 	select ASN1
diff --git a/crypto/ecrdsa.c b/crypto/ecrdsa.c
index 3811f3805b5d..7383dd11089b 100644
--- a/crypto/ecrdsa.c
+++ b/crypto/ecrdsa.c
@@ -18,12 +18,11 @@
 
 #include <linux/module.h>
 #include <linux/crypto.h>
+#include <crypto/sig.h>
 #include <crypto/streebog.h>
-#include <crypto/internal/akcipher.h>
 #include <crypto/internal/ecc.h>
-#include <crypto/akcipher.h>
+#include <crypto/internal/sig.h>
 #include <linux/oid_registry.h>
-#include <linux/scatterlist.h>
 #include "ecrdsa_params.asn1.h"
 #include "ecrdsa_pub_key.asn1.h"
 #include "ecrdsa_defs.h"
@@ -68,13 +67,12 @@ static const struct ecc_curve *get_curve_by_oid(enum OID oid)
 	}
 }
 
-static int ecrdsa_verify(struct akcipher_request *req)
+static int ecrdsa_verify(struct crypto_sig *tfm,
+			 const void *src, unsigned int slen,
+			 const void *digest, unsigned int dlen)
 {
-	struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
-	struct ecrdsa_ctx *ctx = akcipher_tfm_ctx(tfm);
-	unsigned char sig[ECRDSA_MAX_SIG_SIZE];
-	unsigned char digest[STREEBOG512_DIGEST_SIZE];
-	unsigned int ndigits = req->dst_len / sizeof(u64);
+	struct ecrdsa_ctx *ctx = crypto_sig_ctx(tfm);
+	unsigned int ndigits = dlen / sizeof(u64);
 	u64 r[ECRDSA_MAX_DIGITS]; /* witness (r) */
 	u64 _r[ECRDSA_MAX_DIGITS]; /* -r */
 	u64 s[ECRDSA_MAX_DIGITS]; /* second part of sig (s) */
@@ -91,25 +89,19 @@ static int ecrdsa_verify(struct akcipher_request *req)
 	 */
 	if (!ctx->curve ||
 	    !ctx->digest ||
-	    !req->src ||
+	    !src ||
+	    !digest ||
 	    !ctx->pub_key.x ||
-	    req->dst_len != ctx->digest_len ||
-	    req->dst_len != ctx->curve->g.ndigits * sizeof(u64) ||
+	    dlen != ctx->digest_len ||
+	    dlen != ctx->curve->g.ndigits * sizeof(u64) ||
 	    ctx->pub_key.ndigits != ctx->curve->g.ndigits ||
-	    req->dst_len * 2 != req->src_len ||
-	    WARN_ON(req->src_len > sizeof(sig)) ||
-	    WARN_ON(req->dst_len > sizeof(digest)))
+	    dlen * 2 != slen ||
+	    WARN_ON(slen > ECRDSA_MAX_SIG_SIZE) ||
+	    WARN_ON(dlen > STREEBOG512_DIGEST_SIZE))
 		return -EBADMSG;
 
-	sg_copy_to_buffer(req->src, sg_nents_for_len(req->src, req->src_len),
-			  sig, req->src_len);
-	sg_pcopy_to_buffer(req->src,
-			   sg_nents_for_len(req->src,
-					    req->src_len + req->dst_len),
-			   digest, req->dst_len, req->src_len);
-
-	vli_from_be64(s, sig, ndigits);
-	vli_from_be64(r, sig + ndigits * sizeof(u64), ndigits);
+	vli_from_be64(s, src, ndigits);
+	vli_from_be64(r, src + ndigits * sizeof(u64), ndigits);
 
 	/* Step 1: verify that 0 < r < q, 0 < s < q */
 	if (vli_is_zero(r, ndigits) ||
@@ -188,10 +180,10 @@ static u8 *ecrdsa_unpack_u32(u32 *dst, void *src)
 }
 
 /* Parse BER encoded subjectPublicKey. */
-static int ecrdsa_set_pub_key(struct crypto_akcipher *tfm, const void *key,
+static int ecrdsa_set_pub_key(struct crypto_sig *tfm, const void *key,
 			      unsigned int keylen)
 {
-	struct ecrdsa_ctx *ctx = akcipher_tfm_ctx(tfm);
+	struct ecrdsa_ctx *ctx = crypto_sig_ctx(tfm);
 	unsigned int ndigits;
 	u32 algo, paramlen;
 	u8 *params;
@@ -249,9 +241,9 @@ static int ecrdsa_set_pub_key(struct crypto_akcipher *tfm, const void *key,
 	return 0;
 }
 
-static unsigned int ecrdsa_max_size(struct crypto_akcipher *tfm)
+static unsigned int ecrdsa_max_size(struct crypto_sig *tfm)
 {
-	struct ecrdsa_ctx *ctx = akcipher_tfm_ctx(tfm);
+	struct ecrdsa_ctx *ctx = crypto_sig_ctx(tfm);
 
 	/*
 	 * Verify doesn't need any output, so it's just informational
@@ -260,11 +252,11 @@ static unsigned int ecrdsa_max_size(struct crypto_akcipher *tfm)
 	return ctx->pub_key.ndigits * sizeof(u64);
 }
 
-static void ecrdsa_exit_tfm(struct crypto_akcipher *tfm)
+static void ecrdsa_exit_tfm(struct crypto_sig *tfm)
 {
 }
 
-static struct akcipher_alg ecrdsa_alg = {
+static struct sig_alg ecrdsa_alg = {
 	.verify		= ecrdsa_verify,
 	.set_pub_key	= ecrdsa_set_pub_key,
 	.max_size	= ecrdsa_max_size,
@@ -280,12 +272,12 @@ static struct akcipher_alg ecrdsa_alg = {
 
 static int __init ecrdsa_mod_init(void)
 {
-	return crypto_register_akcipher(&ecrdsa_alg);
+	return crypto_register_sig(&ecrdsa_alg);
 }
 
 static void __exit ecrdsa_mod_fini(void)
 {
-	crypto_unregister_akcipher(&ecrdsa_alg);
+	crypto_unregister_sig(&ecrdsa_alg);
 }
 
 module_init(ecrdsa_mod_init);
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index 81ac32c9dd3e..0542817a9456 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -5247,9 +5247,9 @@ static const struct alg_test_desc alg_test_descs[] = {
 		}
 	}, {
 		.alg = "ecrdsa",
-		.test = alg_test_akcipher,
+		.test = alg_test_sig,
 		.suite = {
-			.akcipher = __VECS(ecrdsa_tv_template)
+			.sig = __VECS(ecrdsa_tv_template)
 		}
 	}, {
 		.alg = "essiv(authenc(hmac(sha256),cbc(aes)),sha256)",
diff --git a/crypto/testmgr.h b/crypto/testmgr.h
index a4987610fcb5..fd4823c26d93 100644
--- a/crypto/testmgr.h
+++ b/crypto/testmgr.h
@@ -1119,7 +1119,7 @@ static const struct sig_testvec ecdsa_nist_p521_tv_template[] = {
 /*
  * EC-RDSA test vectors are generated by gost-engine.
  */
-static const struct akcipher_testvec ecrdsa_tv_template[] = {
+static const struct sig_testvec ecrdsa_tv_template[] = {
 	{
 	.key =
 	"\x04\x40\xd5\xa7\x77\xf9\x26\x2f\x8c\xbd\xcc\xe3\x1f\x01\x94\x05"
@@ -1144,7 +1144,6 @@ static const struct akcipher_testvec ecrdsa_tv_template[] = {
 	"\x79\xd2\x76\x64\xa3\xbd\x66\x10\x79\x05\x5a\x06\x42\xec\xb9\xc9",
 	.m_size = 32,
 	.public_key_vec = true,
-	.siggen_sigver_test = true,
 	},
 	{
 	.key =
@@ -1170,7 +1169,6 @@ static const struct akcipher_testvec ecrdsa_tv_template[] = {
 	"\x11\x23\x4a\x70\x43\x52\x7a\x68\x11\x65\x45\x37\xbb\x25\xb7\x40",
 	.m_size = 32,
 	.public_key_vec = true,
-	.siggen_sigver_test = true,
 	},
 	{
 	.key =
@@ -1196,7 +1194,6 @@ static const struct akcipher_testvec ecrdsa_tv_template[] = {
 	"\x9f\x16\xc6\x1c\xb1\x3f\x84\x41\x69\xec\x34\xfd\xf1\xf9\xa3\x39",
 	.m_size = 32,
 	.public_key_vec = true,
-	.siggen_sigver_test = true,
 	},
 	{
 	.key =
@@ -1231,7 +1228,6 @@ static const struct akcipher_testvec ecrdsa_tv_template[] = {
 	"\xa8\xf6\x80\x01\xb9\x27\xac\xd8\x45\x96\x66\xa1\xee\x48\x08\x3f",
 	.m_size = 64,
 	.public_key_vec = true,
-	.siggen_sigver_test = true,
 	},
 	{
 	.key =
@@ -1266,7 +1262,6 @@ static const struct akcipher_testvec ecrdsa_tv_template[] = {
 	"\x6d\xf4\xd2\x45\xc2\x83\xa0\x42\x95\x05\x9d\x89\x8e\x0a\xca\xcc",
 	.m_size = 64,
 	.public_key_vec = true,
-	.siggen_sigver_test = true,
 	},
 };
 
