diff --git a/src/tls/asn1.c b/src/tls/asn1.c
index a08c2e1..2da7b4a 100644
--- a/src/tls/asn1.c
+++ b/src/tls/asn1.c
@@ -9,18 +9,99 @@
 #include "includes.h"
 
 #include "common.h"
+#include "utils/wpabuf.h"
 #include "asn1.h"
 
-struct asn1_oid asn1_sha1_oid = {
+const struct asn1_oid asn1_sha1_oid = {
 	.oid = { 1, 3, 14, 3, 2, 26 },
 	.len = 6
 };
 
-struct asn1_oid asn1_sha256_oid = {
+const struct asn1_oid asn1_sha256_oid = {
 	.oid = { 2, 16, 840, 1, 101, 3, 4, 2, 1 },
 	.len = 9
 };
 
+const struct asn1_oid asn1_ec_public_key_oid = {
+	.oid = { 1, 2, 840, 10045, 2, 1 },
+	.len = 6
+};
+
+const struct asn1_oid asn1_prime256v1_oid = {
+	.oid = { 1, 2, 840, 10045, 3, 1, 7 },
+	.len = 7
+};
+
+const struct asn1_oid asn1_secp384r1_oid = {
+	.oid = { 1, 3, 132, 0, 34 },
+	.len = 5
+};
+
+const struct asn1_oid asn1_secp521r1_oid = {
+	.oid = { 1, 3, 132, 0, 35 },
+	.len = 5
+};
+
+const struct asn1_oid asn1_brainpoolP256r1_oid = {
+	.oid = { 1, 3, 36, 3, 3, 2, 8, 1, 1, 7 },
+	.len = 10
+};
+
+const struct asn1_oid asn1_brainpoolP384r1_oid = {
+	.oid = { 1, 3, 36, 3, 3, 2, 8, 1, 1, 11 },
+	.len = 10
+};
+
+const struct asn1_oid asn1_brainpoolP512r1_oid = {
+	.oid = { 1, 3, 36, 3, 3, 2, 8, 1, 1, 13 },
+	.len = 10
+};
+
+const struct asn1_oid asn1_aes_siv_cmac_aead_256_oid = {
+	.oid = { 1, 2, 840, 113549, 1, 9, 16, 3, 22 },
+	.len = 9
+};
+
+const struct asn1_oid asn1_aes_siv_cmac_aead_384_oid = {
+	.oid = { 1, 2, 840, 113549, 1, 9, 16, 3, 23 },
+	.len = 9
+};
+
+const struct asn1_oid asn1_aes_siv_cmac_aead_512_oid = {
+	.oid = { 1, 2, 840, 113549, 1, 9, 16, 3, 24 },
+	.len = 9
+};
+
+const struct asn1_oid asn1_pbkdf2_oid = {
+	.oid = { 1, 2, 840, 113549, 1, 5, 12 },
+	.len = 7
+};
+
+const struct asn1_oid asn1_pbkdf2_hmac_sha256_oid = {
+	.oid = { 1, 2, 840, 113549, 2, 9 },
+	.len = 6
+};
+
+const struct asn1_oid asn1_pbkdf2_hmac_sha384_oid = {
+	.oid = { 1, 2, 840, 113549, 2, 10 },
+	.len = 6
+};
+
+const struct asn1_oid asn1_pbkdf2_hmac_sha512_oid = {
+	.oid = { 1, 2, 840, 113549, 2, 11 },
+	.len = 6
+};
+
+const struct asn1_oid asn1_dpp_config_params_oid = {
+	.oid = { 1, 3, 6, 1, 4, 1, 40808, 1, 2, 1 },
+	.len = 10
+};
+
+const struct asn1_oid asn1_dpp_asymmetric_key_package_oid = {
+	.oid = { 1, 3, 6, 1, 4, 1, 40808, 1, 2, 2 },
+	.len = 10
+};
+
 
 static int asn1_valid_der_boolean(struct asn1_hdr *hdr)
 {
@@ -270,3 +351,231 @@
 
 	return 1;
 }
+
+
+int asn1_get_integer(const u8 *buf, size_t len, int *integer, const u8 **next)
+{
+	struct asn1_hdr hdr;
+	size_t left;
+	const u8 *pos;
+	int value;
+
+	if (asn1_get_next(buf, len, &hdr) < 0 || hdr.length == 0)
+		return -1;
+
+	if (hdr.class != ASN1_CLASS_UNIVERSAL || hdr.tag != ASN1_TAG_INTEGER) {
+		wpa_printf(MSG_DEBUG,
+			   "ASN.1: Expected INTEGER - found class %d tag 0x%x",
+			   hdr.class, hdr.tag);
+		return -1;
+	}
+
+	*next = hdr.payload + hdr.length;
+	pos = hdr.payload;
+	left = hdr.length;
+	if (left > sizeof(value)) {
+		wpa_printf(MSG_DEBUG, "ASN.1: Too large INTEGER (len %u)",
+			   hdr.length);
+		return -1;
+	}
+	value = 0;
+	while (left) {
+		value <<= 8;
+		value |= *pos++;
+		left--;
+	}
+
+	*integer = value;
+	return 0;
+}
+
+
+int asn1_get_sequence(const u8 *buf, size_t len, struct asn1_hdr *hdr,
+		      const u8 **next)
+{
+	if (asn1_get_next(buf, len, hdr) < 0 ||
+	    hdr->class != ASN1_CLASS_UNIVERSAL ||
+	    hdr->tag != ASN1_TAG_SEQUENCE) {
+		wpa_printf(MSG_DEBUG,
+			   "ASN.1: Expected SEQUENCE - found class %d tag 0x%x",
+			   hdr->class, hdr->tag);
+		return -1;
+	}
+
+	if (next)
+		*next = hdr->payload + hdr->length;
+	return 0;
+}
+
+
+int asn1_get_alg_id(const u8 *buf, size_t len, struct asn1_oid *oid,
+		    const u8 **params, size_t *params_len, const u8 **next)
+{
+	const u8 *pos = buf, *end = buf + len;
+	struct asn1_hdr hdr;
+
+	/*
+	 * AlgorithmIdentifier ::= SEQUENCE {
+	 *     algorithm            OBJECT IDENTIFIER,
+	 *     parameters           ANY DEFINED BY algorithm OPTIONAL}
+	 */
+	if (asn1_get_sequence(pos, end - pos, &hdr, next) < 0 ||
+	    asn1_get_oid(hdr.payload, hdr.length, oid, &pos) < 0)
+		return -1;
+
+	if (params && params_len) {
+		*params = pos;
+		*params_len = hdr.payload + hdr.length - pos;
+	}
+
+	return 0;
+}
+
+
+void asn1_put_integer(struct wpabuf *buf, int val)
+{
+	u8 bin[4];
+	int zeros;
+
+	WPA_PUT_BE32(bin, val);
+	zeros = 0;
+	while (zeros < 3 && bin[zeros] == 0)
+		zeros++;
+	wpabuf_put_u8(buf, ASN1_TAG_INTEGER);
+	wpabuf_put_u8(buf, 4 - zeros);
+	wpabuf_put_data(buf, &bin[zeros], 4 - zeros);
+}
+
+
+static void asn1_put_len(struct wpabuf *buf, size_t len)
+{
+	if (len <= 0x7f) {
+		wpabuf_put_u8(buf, len);
+	} else if (len <= 0xff) {
+		wpabuf_put_u8(buf, 0x80 | 1);
+		wpabuf_put_u8(buf, len);
+	} else if (len <= 0xffff) {
+		wpabuf_put_u8(buf, 0x80 | 2);
+		wpabuf_put_be16(buf, len);
+	} else if (len <= 0xffffff) {
+		wpabuf_put_u8(buf, 0x80 | 3);
+		wpabuf_put_be24(buf, len);
+	} else {
+		wpabuf_put_u8(buf, 0x80 | 4);
+		wpabuf_put_be32(buf, len);
+	}
+}
+
+
+void asn1_put_octet_string(struct wpabuf *buf, const struct wpabuf *val)
+{
+	wpabuf_put_u8(buf, ASN1_TAG_OCTETSTRING);
+	asn1_put_len(buf, wpabuf_len(val));
+	wpabuf_put_buf(buf, val);
+}
+
+
+void asn1_put_oid(struct wpabuf *buf, const struct asn1_oid *oid)
+{
+	u8 *len;
+	size_t i;
+
+	if (oid->len < 2)
+		return;
+	wpabuf_put_u8(buf, ASN1_TAG_OID);
+	len = wpabuf_put(buf, 1);
+	wpabuf_put_u8(buf, 40 * oid->oid[0] + oid->oid[1]);
+	for (i = 2; i < oid->len; i++) {
+		unsigned long val = oid->oid[i];
+		u8 bytes[8];
+		int idx = 0;
+
+		while (val) {
+			bytes[idx] = (idx ? 0x80 : 0x00) | (val & 0x7f);
+			idx++;
+			val >>= 7;
+		}
+		if (idx == 0) {
+			bytes[idx] = 0;
+			idx = 1;
+		}
+		while (idx > 0) {
+			idx--;
+			wpabuf_put_u8(buf, bytes[idx]);
+		}
+	}
+	*len = (u8 *) wpabuf_put(buf, 0) - len - 1;
+}
+
+
+void asn1_put_hdr(struct wpabuf *buf, u8 class, int constructed, u8 tag,
+		  size_t len)
+{
+	wpabuf_put_u8(buf, class << 6 | (constructed ? 0x20 : 0x00) | tag);
+	asn1_put_len(buf, len);
+}
+
+
+void asn1_put_sequence(struct wpabuf *buf, const struct wpabuf *payload)
+{
+	asn1_put_hdr(buf, ASN1_CLASS_UNIVERSAL, 1, ASN1_TAG_SEQUENCE,
+		     wpabuf_len(payload));
+	wpabuf_put_buf(buf, payload);
+}
+
+
+void asn1_put_set(struct wpabuf *buf, const struct wpabuf *payload)
+{
+	asn1_put_hdr(buf, ASN1_CLASS_UNIVERSAL, 1, ASN1_TAG_SET,
+		     wpabuf_len(payload));
+	wpabuf_put_buf(buf, payload);
+}
+
+
+void asn1_put_utf8string(struct wpabuf *buf, const char *val)
+{
+	asn1_put_hdr(buf, ASN1_CLASS_UNIVERSAL, 0, ASN1_TAG_UTF8STRING,
+		     os_strlen(val));
+	wpabuf_put_str(buf, val);
+}
+
+
+struct wpabuf * asn1_build_alg_id(const struct asn1_oid *oid,
+				  const struct wpabuf *params)
+{
+	struct wpabuf *buf;
+	size_t len;
+
+	/*
+	 * AlgorithmIdentifier ::= SEQUENCE {
+	 *    algorithm		OBJECT IDENTIFIER,
+	 *    parameters	ANY DEFINED BY algorithm OPTIONAL}
+	 */
+
+	len = 100;
+	if (params)
+		len += wpabuf_len(params);
+	buf = wpabuf_alloc(len);
+	if (!buf)
+		return NULL;
+	asn1_put_oid(buf, oid);
+	if (params)
+		wpabuf_put_buf(buf, params);
+	return asn1_encaps(buf, ASN1_CLASS_UNIVERSAL, ASN1_TAG_SEQUENCE);
+}
+
+
+struct wpabuf * asn1_encaps(struct wpabuf *buf, u8 class, u8 tag)
+{
+	struct wpabuf *res;
+
+	if (!buf)
+		return NULL;
+	res = wpabuf_alloc(10 + wpabuf_len(buf));
+	if (res) {
+		asn1_put_hdr(res, class, 1, tag, wpabuf_len(buf));
+		wpabuf_put_buf(res, buf);
+	}
+	wpabuf_clear_free(buf);
+	return res;
+}
diff --git a/src/tls/asn1.h b/src/tls/asn1.h
index 6bd7df5..6878a4f 100644
--- a/src/tls/asn1.h
+++ b/src/tls/asn1.h
@@ -65,8 +65,43 @@
 void asn1_oid_to_str(const struct asn1_oid *oid, char *buf, size_t len);
 unsigned long asn1_bit_string_to_long(const u8 *buf, size_t len);
 int asn1_oid_equal(const struct asn1_oid *a, const struct asn1_oid *b);
+int asn1_get_integer(const u8 *buf, size_t len, int *integer, const u8 **next);
+int asn1_get_sequence(const u8 *buf, size_t len, struct asn1_hdr *hdr,
+		      const u8 **next);
+int asn1_get_alg_id(const u8 *buf, size_t len, struct asn1_oid *oid,
+		    const u8 **params, size_t *params_len, const u8 **next);
+void asn1_put_integer(struct wpabuf *buf, int val);
+void asn1_put_octet_string(struct wpabuf *buf, const struct wpabuf *val);
+void asn1_put_oid(struct wpabuf *buf, const struct asn1_oid *oid);
+void asn1_put_hdr(struct wpabuf *buf, u8 class, int constructed, u8 tag,
+		  size_t len);
+void asn1_put_sequence(struct wpabuf *buf, const struct wpabuf *payload);
+void asn1_put_set(struct wpabuf *buf, const struct wpabuf *payload);
+void asn1_put_utf8string(struct wpabuf *buf, const char *val);
+struct wpabuf * asn1_build_alg_id(const struct asn1_oid *oid,
+				  const struct wpabuf *params);
+struct wpabuf * asn1_encaps(struct wpabuf *buf, u8 class, u8 tag);
 
-extern struct asn1_oid asn1_sha1_oid;
-extern struct asn1_oid asn1_sha256_oid;
+extern const struct asn1_oid asn1_sha1_oid;
+extern const struct asn1_oid asn1_sha256_oid;
+extern const struct asn1_oid asn1_ec_public_key_oid;
+extern const struct asn1_oid asn1_prime256v1_oid;
+extern const struct asn1_oid asn1_secp384r1_oid;
+extern const struct asn1_oid asn1_secp521r1_oid;
+extern const struct asn1_oid asn1_brainpoolP256r1_oid;
+extern const struct asn1_oid asn1_brainpoolP384r1_oid;
+extern const struct asn1_oid asn1_brainpoolP512r1_oid;
+extern const struct asn1_oid asn1_aes_siv_cmac_aead_256_oid;
+extern const struct asn1_oid asn1_aes_siv_cmac_aead_384_oid;
+extern const struct asn1_oid asn1_aes_siv_cmac_aead_512_oid;
+extern const struct asn1_oid asn1_aes_siv_cmac_aead_256_oid;
+extern const struct asn1_oid asn1_aes_siv_cmac_aead_384_oid;
+extern const struct asn1_oid asn1_aes_siv_cmac_aead_512_oid;
+extern const struct asn1_oid asn1_pbkdf2_oid;
+extern const struct asn1_oid asn1_pbkdf2_hmac_sha256_oid;
+extern const struct asn1_oid asn1_pbkdf2_hmac_sha384_oid;
+extern const struct asn1_oid asn1_pbkdf2_hmac_sha512_oid;
+extern const struct asn1_oid asn1_dpp_config_params_oid;
+extern const struct asn1_oid asn1_dpp_asymmetric_key_package_oid;
 
 #endif /* ASN1_H */
diff --git a/src/tls/tlsv1_client_read.c b/src/tls/tlsv1_client_read.c
index 80874e5..3825a73 100644
--- a/src/tls/tlsv1_client_read.c
+++ b/src/tls/tlsv1_client_read.c
@@ -312,6 +312,14 @@
 	x509_name_string(&cert->subject, subject, sizeof(subject));
 	ev.peer_cert.subject = subject;
 
+	if (cert->extensions_present & X509_EXT_CERTIFICATE_POLICY) {
+		if (cert->certificate_policy & X509_EXT_CERT_POLICY_TOD_STRICT)
+			ev.peer_cert.tod = 1;
+		else if (cert->certificate_policy &
+			 X509_EXT_CERT_POLICY_TOD_TOFU)
+			ev.peer_cert.tod = 2;
+	}
+
 	conn->event_cb(conn->cb_ctx, TLS_PEER_CERTIFICATE, &ev);
 	wpabuf_free(cert_buf);
 }
@@ -532,7 +540,7 @@
 		}
 	} else if (conn->cred && conn->cred->cert_probe) {
 		wpa_printf(MSG_DEBUG,
-			   "TLSv1: Reject server certificate on probe-only rune");
+			   "TLSv1: Reject server certificate on probe-only run");
 		if (conn->event_cb) {
 			union tls_event_data ev;
 			char buf[128];
diff --git a/src/tls/x509v3.c b/src/tls/x509v3.c
index 1bd5aa0..5c8ac56 100644
--- a/src/tls/x509v3.c
+++ b/src/tls/x509v3.c
@@ -1120,6 +1120,133 @@
 }
 
 
+static int x509_id_cert_policy_any_oid(struct asn1_oid *oid)
+{
+	return oid->len == 5 &&
+		oid->oid[0] == 2 /* iso/itu-t */ &&
+		oid->oid[1] == 5 /* X.500 Directory Services */ &&
+		oid->oid[2] == 29 /* id-ce */ &&
+		oid->oid[3] == 32 /* id-ce-certificate-policies */ &&
+		oid->oid[4] == 0 /* anyPolicy */;
+}
+
+
+static int x509_id_wfa_oid(struct asn1_oid *oid)
+{
+	return oid->len >= 7 &&
+		oid->oid[0] == 1 /* iso */ &&
+		oid->oid[1] == 3 /* identified-organization */ &&
+		oid->oid[2] == 6 /* dod */ &&
+		oid->oid[3] == 1 /* internet */ &&
+		oid->oid[4] == 4 /* private */ &&
+		oid->oid[5] == 1 /* enterprise */ &&
+		oid->oid[6] == 40808 /* WFA */;
+}
+
+
+static int x509_id_wfa_tod_oid(struct asn1_oid *oid)
+{
+	return oid->len >= 9 &&
+		x509_id_wfa_oid(oid) &&
+		oid->oid[7] == 1 &&
+		oid->oid[8] == 3;
+}
+
+
+static int x509_id_wfa_tod_strict_oid(struct asn1_oid *oid)
+{
+	return oid->len == 10 &&
+		x509_id_wfa_tod_oid(oid) &&
+		oid->oid[9] == 1;
+}
+
+
+static int x509_id_wfa_tod_tofu_oid(struct asn1_oid *oid)
+{
+	return oid->len == 10 &&
+		x509_id_wfa_tod_oid(oid) &&
+		oid->oid[9] == 2;
+}
+
+
+static int x509_parse_ext_certificate_policies(struct x509_certificate *cert,
+					       const u8 *pos, size_t len)
+{
+	struct asn1_hdr hdr;
+	const u8 *end;
+
+	/*
+	 * certificatePolicies ::= SEQUENCE SIZE (1..MAX) OF PolicyInformation
+	 *
+	 * PolicyInformation ::= SEQUENCE {
+	 *      policyIdentifier   CertPolicyId,
+	 *      policyQualifiers   SEQUENCE SIZE (1..MAX) OF
+	 *                              PolicyQualifierInfo OPTIONAL }
+	 *
+	 * CertPolicyId ::= OBJECT IDENTIFIER
+	 */
+
+	if (asn1_get_next(pos, len, &hdr) < 0 ||
+	    hdr.class != ASN1_CLASS_UNIVERSAL ||
+	    hdr.tag != ASN1_TAG_SEQUENCE) {
+		wpa_printf(MSG_DEBUG, "X509: Expected SEQUENCE (certificatePolicies) - found class %d tag 0x%x",
+			   hdr.class, hdr.tag);
+		return -1;
+	}
+	if (hdr.length > pos + len - hdr.payload)
+		return -1;
+	pos = hdr.payload;
+	end = pos + hdr.length;
+
+	wpa_hexdump(MSG_MSGDUMP, "X509: certificatePolicies", pos, end - pos);
+
+	while (pos < end) {
+		const u8 *pol_end;
+		struct asn1_oid oid;
+		char buf[80];
+
+		if (asn1_get_next(pos, end - pos, &hdr) < 0 ||
+		    hdr.class != ASN1_CLASS_UNIVERSAL ||
+		    hdr.tag != ASN1_TAG_SEQUENCE) {
+			wpa_printf(MSG_DEBUG, "X509: Expected SEQUENCE (PolicyInformation) - found class %d tag 0x%x",
+				   hdr.class, hdr.tag);
+			return -1;
+		}
+		if (hdr.length > end - hdr.payload)
+			return -1;
+		pos = hdr.payload;
+		pol_end = pos + hdr.length;
+		wpa_hexdump(MSG_MSGDUMP, "X509: PolicyInformation",
+			    pos, pol_end - pos);
+
+		if (asn1_get_oid(pos, pol_end - pos, &oid, &pos))
+			return -1;
+		if (x509_id_cert_policy_any_oid(&oid)) {
+			os_strlcpy(buf, "anyPolicy-STRICT", sizeof(buf));
+			cert->certificate_policy |=
+				X509_EXT_CERT_POLICY_ANY;
+		} else if (x509_id_wfa_tod_strict_oid(&oid)) {
+			os_strlcpy(buf, "TOD-STRICT", sizeof(buf));
+			cert->certificate_policy |=
+				X509_EXT_CERT_POLICY_TOD_STRICT;
+		} else if (x509_id_wfa_tod_tofu_oid(&oid)) {
+			os_strlcpy(buf, "TOD-TOFU", sizeof(buf));
+			cert->certificate_policy |=
+				X509_EXT_CERT_POLICY_TOD_TOFU;
+		} else {
+			asn1_oid_to_str(&oid, buf, sizeof(buf));
+		}
+		wpa_printf(MSG_DEBUG, "policyIdentifier: %s", buf);
+
+		pos = pol_end;
+	}
+
+	cert->extensions_present |= X509_EXT_CERTIFICATE_POLICY;
+
+	return 0;
+}
+
+
 static int x509_id_pkix_oid(struct asn1_oid *oid)
 {
 	return oid->len >= 7 &&
@@ -1234,7 +1361,6 @@
 		return 1;
 
 	/* TODO: add other extensions required by RFC 3280, Ch 4.2:
-	 * certificate policies (section 4.2.1.5)
 	 * name constraints (section 4.2.1.11)
 	 * policy constraints (section 4.2.1.12)
 	 * inhibit any-policy (section 4.2.1.15)
@@ -1248,6 +1374,8 @@
 		return x509_parse_ext_issuer_alt_name(cert, pos, len);
 	case 19: /* id-ce-basicConstraints */
 		return x509_parse_ext_basic_constraints(cert, pos, len);
+	case 32: /* id-ce-certificatePolicies */
+		return x509_parse_ext_certificate_policies(cert, pos, len);
 	case 37: /* id-ce-extKeyUsage */
 		return x509_parse_ext_ext_key_usage(cert, pos, len);
 	default:
diff --git a/src/tls/x509v3.h b/src/tls/x509v3.h
index 7df8e2a..e3b108f 100644
--- a/src/tls/x509v3.h
+++ b/src/tls/x509v3.h
@@ -74,6 +74,7 @@
 #define X509_EXT_SUBJECT_ALT_NAME		(1 << 3)
 #define X509_EXT_ISSUER_ALT_NAME		(1 << 4)
 #define X509_EXT_EXT_KEY_USAGE			(1 << 5)
+#define X509_EXT_CERTIFICATE_POLICY		(1 << 6)
 
 	/* BasicConstraints */
 	int ca; /* cA */
@@ -98,6 +99,12 @@
 #define X509_EXT_KEY_USAGE_CLIENT_AUTH		(1 << 2)
 #define X509_EXT_KEY_USAGE_OCSP			(1 << 3)
 
+	/* CertificatePolicy */
+	unsigned long certificate_policy;
+#define X509_EXT_CERT_POLICY_ANY		(1 << 0)
+#define X509_EXT_CERT_POLICY_TOD_STRICT		(1 << 1)
+#define X509_EXT_CERT_POLICY_TOD_TOFU		(1 << 2)
+
 	/*
 	 * The DER format certificate follows struct x509_certificate. These
 	 * pointers point to that buffer.