diff --git a/src/cardpincheck.c b/src/cardpincheck.c
index ed884e1..e57f86c 100644
--- a/src/cardpincheck.c
+++ b/src/cardpincheck.c
@@ -139,10 +139,18 @@ char* tde_autopin(X509* x509_cert) {
 					int asn1SeqValueObjectTag;
 					int asn1SeqValueObjectClass;
 					int returnCode;
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+					uint8_t* asnSeqValueString = ASN1_STRING_data(asnValue->value.sequence);
+#else
 					const uint8_t* asnSeqValueString = ASN1_STRING_get0_data(asnValue->value.sequence);
+#endif
 
 					index = 0;	// Search for the PIN field
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+					asnSeqValueStack = ASN1_seq_unpack_ASN1_TYPE(asnSeqValueString, ASN1_STRING_length(asnValue->value.sequence), d2i_ASN1_TYPE, ASN1_TYPE_free);
+#else
 					asnSeqValueStack = d2i_ASN1_SEQUENCE_ANY(NULL, &asnSeqValueString, ASN1_STRING_length(asnValue->value.sequence));
+#endif
 					asnSeqValue = sk_ASN1_TYPE_value(asnSeqValueStack, index);
 					if (asnSeqValue) {
 						if (asnSeqValue->value.octet_string->data[0] == ((V_ASN1_CONSTRUCTED | V_ASN1_CONTEXT_SPECIFIC) + index)) {
@@ -151,13 +159,19 @@ char* tde_autopin(X509* x509_cert) {
 							if (!(returnCode & 0x80)) {
 								if (returnCode == (V_ASN1_CONSTRUCTED + index)) {
 									if (d2i_ASN1_GENERALSTRING(&asnGeneralString, &asn1SeqValueObjectData, asn1SeqValueObjectLength) != NULL) {
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+										retString = strdup(ASN1_STRING_data(asnGeneralString));
+#else
 										retString = strdup(ASN1_STRING_get0_data(asnGeneralString));
+#endif
 									}
 								}
 							}
 						}
 					}
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
 					sk_ASN1_TYPE_pop_free(asnSeqValueStack, ASN1_TYPE_free);
+#endif
 				}
 			}
 		}