diff --git a/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/Ed25519PrivateKey.kt b/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/Ed25519PrivateKey.kt
index eaef4a266..8cb5136cf 100644
--- a/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/Ed25519PrivateKey.kt
+++ b/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/Ed25519PrivateKey.kt
@@ -8,6 +8,7 @@ import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.ExportableKey
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.JWK
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.KeyTypes
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PEMKey
+import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PEMKeyType
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PrivateKey
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PublicKey
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.SignableKey
@@ -37,7 +38,7 @@ class Ed25519PrivateKey(nativeValue: ByteArray) : PrivateKey(), SignableKey, Sto
 
     override fun getPem(): String {
         return PEMKey(
-            keyType = "EC PRIVATE KEY",
+            keyType = PEMKeyType.EC_PRIVATE_KEY,
             keyData = raw
         ).pemEncoded()
     }
diff --git a/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/Ed25519PublicKey.kt b/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/Ed25519PublicKey.kt
index ff1f97e91..e4ffcd981 100644
--- a/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/Ed25519PublicKey.kt
+++ b/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/Ed25519PublicKey.kt
@@ -8,6 +8,7 @@ import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.ExportableKey
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.JWK
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.KeyTypes
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PEMKey
+import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PEMKeyType
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PublicKey
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.StorableKey
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.VerifiableKey
@@ -30,7 +31,7 @@ class Ed25519PublicKey(nativeValue: ByteArray) : PublicKey(), VerifiableKey, Sto
 
     override fun getPem(): String {
         return PEMKey(
-            keyType = "EC PUBLIC KEY",
+            keyType = PEMKeyType.EC_PUBLIC_KEY,
             keyData = raw
         ).pemEncoded()
     }
diff --git a/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/Secp256k1PrivateKey.kt b/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/Secp256k1PrivateKey.kt
index df9afa160..c6e9d2451 100644
--- a/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/Secp256k1PrivateKey.kt
+++ b/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/Secp256k1PrivateKey.kt
@@ -10,6 +10,7 @@ import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.ExportableKey
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.JWK
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.KeyTypes
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PEMKey
+import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PEMKeyType
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PrivateKey
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PublicKey
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.SignableKey
@@ -37,7 +38,7 @@ class Secp256k1PrivateKey(nativeValue: ByteArray) : PrivateKey(), SignableKey, S
 
     override fun getPem(): String {
         return PEMKey(
-            keyType = "EC PRIVATE KEY",
+            keyType = PEMKeyType.EC_PRIVATE_KEY,
             keyData = raw
         ).pemEncoded()
     }
diff --git a/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/Secp256k1PublicKey.kt b/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/Secp256k1PublicKey.kt
index a2b067a93..87219667e 100644
--- a/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/Secp256k1PublicKey.kt
+++ b/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/Secp256k1PublicKey.kt
@@ -12,6 +12,7 @@ import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.ExportableKey
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.JWK
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.KeyTypes
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PEMKey
+import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PEMKeyType
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PublicKey
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.StorableKey
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.VerifiableKey
@@ -42,7 +43,7 @@ class Secp256k1PublicKey(nativeValue: ByteArray) : PublicKey(), VerifiableKey, S
 
     override fun getPem(): String {
         return PEMKey(
-            keyType = "EC PUBLIC KEY",
+            keyType = PEMKeyType.EC_PUBLIC_KEY,
             keyData = raw
         ).pemEncoded()
     }
diff --git a/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/X25519PrivateKey.kt b/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/X25519PrivateKey.kt
index 0c9fa8cf5..32af0c0a9 100644
--- a/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/X25519PrivateKey.kt
+++ b/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/X25519PrivateKey.kt
@@ -8,6 +8,7 @@ import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.ExportableKey
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.JWK
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.KeyTypes
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PEMKey
+import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PEMKeyType
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PrivateKey
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PublicKey
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.StorableKey
@@ -30,7 +31,7 @@ class X25519PrivateKey(nativeValue: ByteArray) : PrivateKey(), StorableKey, Expo
 
     override fun getPem(): String {
         return PEMKey(
-            keyType = "EC PRIVATE KEY",
+            keyType = PEMKeyType.EC_PRIVATE_KEY,
             keyData = raw
         ).pemEncoded()
     }
diff --git a/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/X25519PublicKey.kt b/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/X25519PublicKey.kt
index c2c58c4ac..789d8c581 100644
--- a/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/X25519PublicKey.kt
+++ b/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/apollo/utils/X25519PublicKey.kt
@@ -7,6 +7,7 @@ import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.ExportableKey
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.JWK
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.KeyTypes
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PEMKey
+import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PEMKeyType
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.PublicKey
 import io.iohk.atala.prism.walletsdk.domain.models.keyManagement.StorableKey
 
@@ -23,7 +24,7 @@ class X25519PublicKey(nativeValue: ByteArray) : PublicKey(), ExportableKey, Stor
 
     override fun getPem(): String {
         return PEMKey(
-            keyType = "EC PUBLIC KEY",
+            keyType = PEMKeyType.EC_PUBLIC_KEY,
             keyData = raw
         ).pemEncoded()
     }
diff --git a/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/domain/models/keyManagement/ExportableImportableKey.kt b/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/domain/models/keyManagement/ExportableImportableKey.kt
index 8a78871c8..d63d5b8f3 100644
--- a/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/domain/models/keyManagement/ExportableImportableKey.kt
+++ b/atala-prism-sdk/src/commonMain/kotlin/io/iohk/atala/prism/walletsdk/domain/models/keyManagement/ExportableImportableKey.kt
@@ -1,8 +1,7 @@
 package io.iohk.atala.prism.walletsdk.domain.models.keyManagement
 
-import io.iohk.atala.prism.apollo.base64.base64UrlDecoded
+import io.iohk.atala.prism.apollo.base64.base64PadEncoded
 import io.iohk.atala.prism.apollo.base64.base64UrlDecodedBytes
-import io.iohk.atala.prism.apollo.base64.base64UrlEncoded
 import kotlinx.serialization.Serializable
 
 interface ExportableKey {
@@ -40,15 +39,15 @@ data class JWK(
     val k: String? = null
 )
 
-data class PEMKey(val keyType: String, val keyData: ByteArray) {
-    constructor(keyType: String, keyData: String) : this(keyType, keyData.base64UrlDecodedBytes)
+data class PEMKey(val keyType: PEMKeyType, val keyData: ByteArray) {
+    constructor(keyType: PEMKeyType, keyData: String) : this(keyType, keyData.base64UrlDecodedBytes)
 
     fun pemEncoded(): String {
-        val base64Data = keyData.base64UrlEncoded
+        val base64Data = keyData.base64PadEncoded
         val beginMarker = "-----BEGIN $keyType-----"
         val endMarker = "-----END $keyType-----"
 
-        return "$beginMarker\n$base64Data$endMarker"
+        return "$beginMarker\n$base64Data\n$endMarker"
     }
 
     companion object {
@@ -61,17 +60,29 @@ data class PEMKey(val keyType: String, val keyData: ByteArray) {
             val beginMarker = lines[0]
             val endMarker = lines[lines.size - 1]
 
-            if (!beginMarker.startsWith("-----BEGIN ") || !beginMarker.endsWith("-----") ||
-                !endMarker.startsWith("-----END ") || !endMarker.endsWith("-----")
+            if (beginMarker.startsWith("-----BEGIN ").not() || beginMarker.endsWith("-----").not() ||
+                endMarker.startsWith("-----END ").not() || endMarker.endsWith("-----").not()
             ) {
                 return null
             }
 
-            val keyType = beginMarker.substring(11, beginMarker.length - 5)
+            val keyType = PEMKeyType.fromString(beginMarker) ?: throw Exception("Unknown PEM Key type")
+
             val base64Data = lines.subList(1, lines.size - 1).joinToString("")
-            val keyData = base64Data.base64UrlDecoded
+            val keyData = base64Data.base64PadEncoded
 
             return PEMKey(keyType = keyType, keyData = keyData)
         }
     }
 }
+
+enum class PEMKeyType(val value: Pair<String, String>) {
+    EC_PRIVATE_KEY(Pair("-----BEGIN EC PRIVATE KEY-----", "-----END EC PRIVATE KEY-----")),
+    EC_PUBLIC_KEY(Pair("-----BEGIN EC PUBLIC KEY-----", "-----END EC PUBLIC KEY-----"));
+
+    companion object {
+        fun fromString(value: String): PEMKeyType? {
+            return values().firstOrNull { it.value.first == value || it.value.second == value }
+        }
+    }
+}
diff --git a/atala-prism-sdk/src/commonTest/kotlin/io/iohk/atala/prism/walletsdk/domain/models/keyManagement/ExportableImportableKeyTest.kt b/atala-prism-sdk/src/commonTest/kotlin/io/iohk/atala/prism/walletsdk/domain/models/keyManagement/ExportableImportableKeyTest.kt
new file mode 100644
index 000000000..86d79111d
--- /dev/null
+++ b/atala-prism-sdk/src/commonTest/kotlin/io/iohk/atala/prism/walletsdk/domain/models/keyManagement/ExportableImportableKeyTest.kt
@@ -0,0 +1,24 @@
+package io.iohk.atala.prism.walletsdk.domain.models.keyManagement
+
+import junit.framework.TestCase.assertNull
+import org.junit.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertNotNull
+
+class ExportableImportableKeyTest {
+
+    @Test
+    fun testPEMKeyTypeFromString_whenCorrectStringProvided_thenSuccess() {
+        val keyTypePrivate = PEMKeyType.fromString("-----BEGIN EC PRIVATE KEY-----")
+        assertNotNull(keyTypePrivate)
+        assertEquals(PEMKeyType.EC_PRIVATE_KEY, keyTypePrivate)
+        val keyTypePublic = PEMKeyType.fromString("-----BEGIN EC PUBLIC KEY-----")
+        assertNotNull(keyTypePublic)
+        assertEquals(PEMKeyType.EC_PUBLIC_KEY, keyTypePublic)
+    }
+
+    @Test
+    fun testPEMKeyTypeFromString_whenWrongStringProvided_thenReturnNull() {
+        assertNull(PEMKeyType.fromString("-----BEGIN FAIL KEY-----"))
+    }
+}