diff --git a/lib/crypto/ecdsa/ecdsa_p256_private.go b/lib/crypto/ecdsa/ecdsa_p256_private.go
index dced1f5..741d979 100644
--- a/lib/crypto/ecdsa/ecdsa_p256_private.go
+++ b/lib/crypto/ecdsa/ecdsa_p256_private.go
@@ -17,7 +17,7 @@ type (
 
 // Len implements types.SigningPrivateKey.
 func (e *ECP256PrivateKey) Len() int {
-	panic("unimplemented")
+	return 32
 }
 
 // Sign implements types.Signer.
diff --git a/lib/crypto/ecdsa/ecdsa_p256_public.go b/lib/crypto/ecdsa/ecdsa_p256_public.go
index 57df3ca..92943a5 100644
--- a/lib/crypto/ecdsa/ecdsa_p256_public.go
+++ b/lib/crypto/ecdsa/ecdsa_p256_public.go
@@ -5,6 +5,7 @@ import (
 	"crypto/elliptic"
 
 	"github.com/go-i2p/go-i2p/lib/crypto/types"
+	"github.com/samber/oops"
 )
 
 type (
@@ -13,17 +14,30 @@ type (
 
 // Verify implements types.Verifier.
 func (k ECP256PublicKey) Verify(data []byte, sig []byte) error {
-	panic("unimplemented")
+	log.WithField("data_length", len(data)).Debug("Verifying data with ECDSA-P256")
+	verifier, err := k.NewVerifier()
+	if err != nil {
+		log.WithError(err).Error("Failed to create verifier")
+		return err
+	}
+	return verifier.Verify(data, sig)
 }
 
 // VerifyHash implements types.Verifier.
 func (k ECP256PublicKey) VerifyHash(h []byte, sig []byte) error {
-	panic("unimplemented")
+	log.WithField("hash_length", len(h)).Debug("Verifying hash with ECDSA-P256")
+	verifier, err := k.NewVerifier()
+	if err != nil {
+		log.WithError(err).Error("Failed to create verifier")
+		return err
+	}
+	return verifier.VerifyHash(h, sig)
 }
 
 // Encrypt implements types.Encrypter.
 func (k *ECP256PublicKey) Encrypt(data []byte) (enc []byte, err error) {
-	panic("unimplemented")
+	log.Error("Encryption not supported with ECDSA keys")
+	return nil, oops.Errorf("encryption not supported with ECDSA keys; ECDSA is for signing/verification only")
 }
 
 func (k ECP256PublicKey) Len() int {
diff --git a/lib/crypto/ecdsa/ecdsa_p384_public.go b/lib/crypto/ecdsa/ecdsa_p384_public.go
index 99151e3..55b4448 100644
--- a/lib/crypto/ecdsa/ecdsa_p384_public.go
+++ b/lib/crypto/ecdsa/ecdsa_p384_public.go
@@ -13,12 +13,24 @@ type (
 
 // Verify implements types.Verifier.
 func (k ECP384PublicKey) Verify(data []byte, sig []byte) error {
-	panic("unimplemented")
+	log.WithField("data_length", len(data)).Debug("Verifying data with ECDSA-P384")
+	verifier, err := k.NewVerifier()
+	if err != nil {
+		log.WithError(err).Error("Failed to create verifier")
+		return err
+	}
+	return verifier.Verify(data, sig)
 }
 
 // VerifyHash implements types.Verifier.
 func (k ECP384PublicKey) VerifyHash(h []byte, sig []byte) error {
-	panic("unimplemented")
+	log.WithField("hash_length", len(h)).Debug("Verifying hash with ECDSA-P384")
+	verifier, err := k.NewVerifier()
+	if err != nil {
+		log.WithError(err).Error("Failed to create verifier")
+		return err
+	}
+	return verifier.VerifyHash(h, sig)
 }
 
 func (k ECP384PublicKey) Bytes() []byte {
diff --git a/lib/crypto/ecdsa/ecdsa_p521_public.go b/lib/crypto/ecdsa/ecdsa_p521_public.go
index 646f763..bfaa13e 100644
--- a/lib/crypto/ecdsa/ecdsa_p521_public.go
+++ b/lib/crypto/ecdsa/ecdsa_p521_public.go
@@ -13,12 +13,24 @@ type (
 
 // Verify implements types.Verifier.
 func (k ECP521PublicKey) Verify(data []byte, sig []byte) error {
-	panic("unimplemented")
+	log.WithField("data_length", len(data)).Debug("Verifying data with ECDSA-P521")
+	verifier, err := k.NewVerifier()
+	if err != nil {
+		log.WithError(err).Error("Failed to create verifier")
+		return err
+	}
+	return verifier.Verify(data, sig)
 }
 
 // VerifyHash implements types.Verifier.
 func (k ECP521PublicKey) VerifyHash(h []byte, sig []byte) error {
-	panic("unimplemented")
+	log.WithField("hash_length", len(h)).Debug("Verifying hash with ECDSA-P521")
+	verifier, err := k.NewVerifier()
+	if err != nil {
+		log.WithError(err).Error("Failed to create verifier")
+		return err
+	}
+	return verifier.VerifyHash(h, sig)
 }
 
 func (k ECP521PublicKey) Bytes() []byte {
diff --git a/template.md b/template.md
index 7dcc429..8b801ee 100644
--- a/template.md
+++ b/template.md
@@ -11,3 +11,5 @@
 {{ .Name }} 
 
 {{ .ImportPath }}
+
+[go-i2p template file](/template.md)
\ No newline at end of file