diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 51974f6..a3f1673 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -352,10 +352,10 @@
 
 adapt_cmd_for_psk () {
     case "$2" in
-        *openssl*s_server*) s='-psk abc123 -nocert';;
-        *openssl*) s='-psk abc123';;
-        *gnutls-*) s='--pskusername=Client_identity --pskkey=abc123';;
-        *) s='psk=abc123';;
+        *openssl*s_server*) s='-psk 73776f726466697368 -nocert';;
+        *openssl*) s='-psk 73776f726466697368';;
+        *gnutls-*) s='--pskusername=Client_identity --pskkey=73776f726466697368';;
+        *) s='psk=73776f726466697368';;
     esac
     eval $1='"$2 $s"'
     unset s
@@ -1724,8 +1724,8 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "Opaque psk: client: ECDHE-PSK not supported" \
-            "$P_SRV debug_level=1 psk=abc123 psk_identity=foo" \
-            "$P_CLI debug_level=1 psk=abc123 psk_identity=foo psk_opaque=1 \
+            "$P_SRV debug_level=1 psk=73776f726466697368 psk_identity=foo" \
+            "$P_CLI debug_level=1 psk=73776f726466697368 psk_identity=foo psk_opaque=1 \
             force_version=tls12 \
             force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-128-CBC-SHA" \
             1 \
@@ -1735,8 +1735,8 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "Opaque psk: client: DHE-PSK not supported" \
-            "$P_SRV debug_level=1 psk=abc123 psk_identity=foo" \
-            "$P_CLI debug_level=1 psk=abc123 psk_identity=foo psk_opaque=1 \
+            "$P_SRV debug_level=1 psk=73776f726466697368 psk_identity=foo" \
+            "$P_CLI debug_level=1 psk=73776f726466697368 psk_identity=foo psk_opaque=1 \
             force_version=tls12 \
             force_ciphersuite=TLS-DHE-PSK-WITH-AES-128-CBC-SHA" \
             1 \
@@ -1746,8 +1746,8 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "Opaque psk: client: RSA-PSK not supported" \
-            "$P_SRV debug_level=1 psk=abc123 psk_identity=foo" \
-            "$P_CLI debug_level=1 psk=abc123 psk_identity=foo psk_opaque=1 \
+            "$P_SRV debug_level=1 psk=73776f726466697368 psk_identity=foo" \
+            "$P_CLI debug_level=1 psk=73776f726466697368 psk_identity=foo psk_opaque=1 \
             force_version=tls12 \
             force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA" \
             1 \
@@ -1757,10 +1757,10 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "Opaque psk: server: ECDHE-PSK not supported" \
-            "$P_SRV debug_level=1 psk=abc123 psk_identity=foo psk_opaque=1 \
+            "$P_SRV debug_level=1 psk=73776f726466697368 psk_identity=foo psk_opaque=1 \
             force_version=tls12 \
             force_ciphersuite=TLS-ECDHE-PSK-WITH-AES-128-CBC-SHA" \
-            "$P_CLI debug_level=1 psk=abc123 psk_identity=foo" \
+            "$P_CLI debug_level=1 psk=73776f726466697368 psk_identity=foo" \
             1 \
             -s "opaque PSK not supported with ECDHE-PSK" \
             -s "error" \
@@ -1768,10 +1768,10 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "Opaque psk: server: DHE-PSK not supported" \
-            "$P_SRV debug_level=1 psk=abc123 psk_identity=foo psk_opaque=1 \
+            "$P_SRV debug_level=1 psk=73776f726466697368 psk_identity=foo psk_opaque=1 \
             force_version=tls12 \
             force_ciphersuite=TLS-DHE-PSK-WITH-AES-128-CBC-SHA" \
-            "$P_CLI debug_level=1 psk=abc123 psk_identity=foo" \
+            "$P_CLI debug_level=1 psk=73776f726466697368 psk_identity=foo" \
             1 \
             -s "opaque PSK not supported with DHE-PSK" \
             -s "error" \
@@ -1779,10 +1779,10 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "Opaque psk: server: RSA-PSK not supported" \
-            "$P_SRV debug_level=1 psk=abc123 psk_identity=foo psk_opaque=1 \
+            "$P_SRV debug_level=1 psk=73776f726466697368 psk_identity=foo psk_opaque=1 \
             force_version=tls12 \
             force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA" \
-            "$P_CLI debug_level=1 psk=abc123 psk_identity=foo" \
+            "$P_CLI debug_level=1 psk=73776f726466697368 psk_identity=foo" \
             1 \
             -s "opaque PSK not supported with RSA-PSK" \
             -s "error" \
@@ -6198,9 +6198,9 @@
 # Tests for PSK callback
 
 run_test    "PSK callback: psk, no callback" \
-            "$P_SRV psk=abc123 psk_identity=foo" \
+            "$P_SRV psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123" \
+            psk_identity=foo psk=73776f726466697368" \
             0 \
             -S "SSL - None of the common ciphersuites is usable" \
             -S "SSL - Unknown identity received" \
@@ -6208,9 +6208,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque psk on client, no callback" \
-            "$P_SRV extended_ms=0 debug_level=1 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=0 debug_level=1 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -c "skip PMS generation for opaque PSK"\
             -S "skip PMS generation for opaque PSK"\
@@ -6222,9 +6222,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque psk on client, no callback, SHA-384" \
-            "$P_SRV extended_ms=0 debug_level=1 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=0 debug_level=1 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -c "skip PMS generation for opaque PSK"\
             -S "skip PMS generation for opaque PSK"\
@@ -6236,9 +6236,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque psk on client, no callback, EMS" \
-            "$P_SRV extended_ms=1 debug_level=3 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=1 debug_level=3 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -c "skip PMS generation for opaque PSK"\
             -S "skip PMS generation for opaque PSK"\
@@ -6250,9 +6250,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: opaque psk on client, no callback, SHA-384, EMS" \
-            "$P_SRV extended_ms=1 debug_level=3 psk=abc123 psk_identity=foo" \
+            "$P_SRV extended_ms=1 debug_level=3 psk=73776f726466697368 psk_identity=foo" \
             "$P_CLI extended_ms=1 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123 psk_opaque=1" \
+            psk_identity=foo psk=73776f726466697368 psk_opaque=1" \
             0 \
             -c "skip PMS generation for opaque PSK"\
             -S "skip PMS generation for opaque PSK"\
@@ -6264,9 +6264,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, static opaque on server, no callback" \
-            "$P_SRV extended_ms=0 debug_level=1 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
+            "$P_SRV extended_ms=0 debug_level=1 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123" \
+            psk_identity=foo psk=73776f726466697368" \
             0 \
             -C "skip PMS generation for opaque PSK"\
             -s "skip PMS generation for opaque PSK"\
@@ -6278,9 +6278,9 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, static opaque on server, no callback, SHA-384" \
-            "$P_SRV extended_ms=0 debug_level=1 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384" \
+            "$P_SRV extended_ms=0 debug_level=1 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384" \
             "$P_CLI extended_ms=0 debug_level=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123" \
+            psk_identity=foo psk=73776f726466697368" \
             0 \
             -C "skip PMS generation for opaque PSK"\
             -s "skip PMS generation for opaque PSK"\
@@ -6292,10 +6292,10 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, static opaque on server, no callback, EMS" \
-            "$P_SRV debug_level=3 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 \
+            "$P_SRV debug_level=3 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 \
             force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA extended_ms=1" \
             "$P_CLI debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123 extended_ms=1" \
+            psk_identity=foo psk=73776f726466697368 extended_ms=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -6307,10 +6307,10 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, static opaque on server, no callback, EMS, SHA384" \
-            "$P_SRV debug_level=3 psk=abc123 psk_identity=foo psk_opaque=1 min_version=tls12 \
+            "$P_SRV debug_level=3 psk=73776f726466697368 psk_identity=foo psk_opaque=1 min_version=tls12 \
             force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384 extended_ms=1" \
             "$P_CLI debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-256-CBC-SHA384 \
-            psk_identity=foo psk=abc123 extended_ms=1" \
+            psk_identity=foo psk=73776f726466697368 extended_ms=1" \
             0 \
             -c "session hash for extended master secret"\
             -s "session hash for extended master secret"\
@@ -6380,7 +6380,7 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, mismatching static raw PSK on server, opaque PSK from callback" \
-            "$P_SRV extended_ms=0 psk_identity=foo psk=abc123 debug_level=3 psk_list=abc,dead,def,beef psk_list_opaque=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
+            "$P_SRV extended_ms=0 psk_identity=foo psk=73776f726466697368 debug_level=3 psk_list=abc,dead,def,beef psk_list_opaque=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             0 \
@@ -6394,7 +6394,7 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, mismatching static opaque PSK on server, opaque PSK from callback" \
-            "$P_SRV extended_ms=0 psk_opaque=1 psk_identity=foo psk=abc123 debug_level=3 psk_list=abc,dead,def,beef psk_list_opaque=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
+            "$P_SRV extended_ms=0 psk_opaque=1 psk_identity=foo psk=73776f726466697368 debug_level=3 psk_list=abc,dead,def,beef psk_list_opaque=1 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             0 \
@@ -6408,7 +6408,7 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, mismatching static opaque PSK on server, raw PSK from callback" \
-            "$P_SRV extended_ms=0 psk_opaque=1 psk_identity=foo psk=abc123 debug_level=3 psk_list=abc,dead,def,beef min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
+            "$P_SRV extended_ms=0 psk_opaque=1 psk_identity=foo psk=73776f726466697368 debug_level=3 psk_list=abc,dead,def,beef min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             0 \
@@ -6421,7 +6421,7 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, id-matching but wrong raw PSK on server, opaque PSK from callback" \
-            "$P_SRV extended_ms=0 psk_opaque=1 psk_identity=def psk=abc123 debug_level=3 psk_list=abc,dead,def,beef min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
+            "$P_SRV extended_ms=0 psk_opaque=1 psk_identity=def psk=73776f726466697368 debug_level=3 psk_list=abc,dead,def,beef min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             0 \
@@ -6434,7 +6434,7 @@
 
 requires_config_enabled MBEDTLS_USE_PSA_CRYPTO
 run_test    "PSK callback: raw psk on client, matching opaque PSK on server, wrong opaque PSK from callback" \
-            "$P_SRV extended_ms=0 psk_opaque=1 psk_identity=def psk=beef debug_level=3 psk_list=abc,dead,def,abc123 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
+            "$P_SRV extended_ms=0 psk_opaque=1 psk_identity=def psk=beef debug_level=3 psk_list=abc,dead,def,73776f726466697368 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA" \
             "$P_CLI extended_ms=0 debug_level=3 min_version=tls12 force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
             psk_identity=def psk=beef" \
             1 \
@@ -6443,16 +6443,16 @@
 run_test    "PSK callback: no psk, no callback" \
             "$P_SRV" \
             "$P_CLI force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123" \
+            psk_identity=foo psk=73776f726466697368" \
             1 \
             -s "SSL - None of the common ciphersuites is usable" \
             -S "SSL - Unknown identity received" \
             -S "SSL - Verification of the message MAC failed"
 
 run_test    "PSK callback: callback overrides other settings" \
-            "$P_SRV psk=abc123 psk_identity=foo psk_list=abc,dead,def,beef" \
+            "$P_SRV psk=73776f726466697368 psk_identity=foo psk_list=abc,dead,def,beef" \
             "$P_CLI force_ciphersuite=TLS-PSK-WITH-AES-128-CBC-SHA \
-            psk_identity=foo psk=abc123" \
+            psk_identity=foo psk=73776f726466697368" \
             1 \
             -S "SSL - None of the common ciphersuites is usable" \
             -s "SSL - Unknown identity received" \
@@ -7965,9 +7965,9 @@
 
 requires_config_enabled MBEDTLS_SSL_ASYNC_PRIVATE
 run_test    "SSL async private: decrypt RSA-PSK, delay=0" \
-            "$P_SRV psk=abc123 \
+            "$P_SRV psk=73776f726466697368 \
              async_operations=d async_private_delay1=0 async_private_delay2=0" \
-            "$P_CLI psk=abc123 \
+            "$P_CLI psk=73776f726466697368 \
              force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA256" \
             0 \
             -s "Async decrypt callback: using key slot " \
@@ -7975,9 +7975,9 @@
 
 requires_config_enabled MBEDTLS_SSL_ASYNC_PRIVATE
 run_test    "SSL async private: decrypt RSA-PSK, delay=1" \
-            "$P_SRV psk=abc123 \
+            "$P_SRV psk=73776f726466697368 \
              async_operations=d async_private_delay1=1 async_private_delay2=1" \
-            "$P_CLI psk=abc123 \
+            "$P_CLI psk=73776f726466697368 \
              force_ciphersuite=TLS-RSA-PSK-WITH-AES-128-CBC-SHA256" \
             0 \
             -s "Async decrypt callback: using key slot " \
@@ -8415,7 +8415,7 @@
             -s "! Certificate verification was skipped"
 
 run_test    "DTLS wrong PSK: badmac alert" \
-            "$P_SRV dtls=1 psk=abc123 force_ciphersuite=TLS-PSK-WITH-AES-128-GCM-SHA256" \
+            "$P_SRV dtls=1 psk=73776f726466697368 force_ciphersuite=TLS-PSK-WITH-AES-128-GCM-SHA256" \
             "$P_CLI dtls=1 psk=abc124" \
             1 \
             -s "SSL - Verification of the message MAC failed" \
@@ -10293,8 +10293,8 @@
 requires_config_value_at_most "MBEDTLS_SSL_DTLS_MAX_BUFFERING" 230
 run_test    "DTLS reordering: Buffer encrypted Finished message, drop for fragmented NewSessionTicket" \
             -p "$P_PXY delay_srv=NewSessionTicket delay_srv=NewSessionTicket delay_ccs=1" \
-            "$P_SRV mtu=140 response_size=90 dgram_packing=0 psk=abc123 psk_identity=foo cookies=0 dtls=1 debug_level=2" \
-            "$P_CLI dgram_packing=0 dtls=1 debug_level=2 force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8 psk=abc123 psk_identity=foo" \
+            "$P_SRV mtu=140 response_size=90 dgram_packing=0 psk=73776f726466697368 psk_identity=foo cookies=0 dtls=1 debug_level=2" \
+            "$P_CLI dgram_packing=0 dtls=1 debug_level=2 force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8 psk=73776f726466697368 psk_identity=foo" \
             0 \
             -s "Buffer record from epoch 1" \
             -s "Found buffered record from current epoch - load" \
@@ -10308,8 +10308,8 @@
 run_test    "DTLS proxy: 3d (drop, delay, duplicate), \"short\" PSK handshake" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
             "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
-             psk=abc123" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
+             psk=73776f726466697368" \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=73776f726466697368 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \
             -s "Extra-header:" \
@@ -10376,8 +10376,8 @@
 run_test    "DTLS proxy: 3d, min handshake, resumption" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
             "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
-             psk=abc123 debug_level=3" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
+             psk=73776f726466697368 debug_level=3" \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=73776f726466697368 \
              debug_level=3 reconnect=1 skip_close_notify=1 read_timeout=1000 max_resend=10 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \
@@ -10391,8 +10391,8 @@
 run_test    "DTLS proxy: 3d, min handshake, resumption, nbio" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
             "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
-             psk=abc123 debug_level=3 nbio=2" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
+             psk=73776f726466697368 debug_level=3 nbio=2" \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=73776f726466697368 \
              debug_level=3 reconnect=1 skip_close_notify=1 read_timeout=1000 max_resend=10 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8 nbio=2" \
             0 \
@@ -10406,8 +10406,8 @@
 run_test    "DTLS proxy: 3d, min handshake, client-initiated renego" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
             "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
-             psk=abc123 renegotiation=1 debug_level=2" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
+             psk=73776f726466697368 renegotiation=1 debug_level=2" \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=73776f726466697368 \
              renegotiate=1 debug_level=2 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \
@@ -10421,8 +10421,8 @@
 run_test    "DTLS proxy: 3d, min handshake, client-initiated renego, nbio" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
             "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
-             psk=abc123 renegotiation=1 debug_level=2" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
+             psk=73776f726466697368 renegotiation=1 debug_level=2" \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=73776f726466697368 \
              renegotiate=1 debug_level=2 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \
@@ -10436,9 +10436,9 @@
 run_test    "DTLS proxy: 3d, min handshake, server-initiated renego" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
             "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
-             psk=abc123 renegotiate=1 renegotiation=1 exchanges=4 \
+             psk=73776f726466697368 renegotiate=1 renegotiation=1 exchanges=4 \
              debug_level=2" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=73776f726466697368 \
              renegotiation=1 exchanges=4 debug_level=2 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \
@@ -10452,9 +10452,9 @@
 run_test    "DTLS proxy: 3d, min handshake, server-initiated renego, nbio" \
             -p "$P_PXY drop=5 delay=5 duplicate=5" \
             "$P_SRV dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 auth_mode=none \
-             psk=abc123 renegotiate=1 renegotiation=1 exchanges=4 \
+             psk=73776f726466697368 renegotiate=1 renegotiation=1 exchanges=4 \
              debug_level=2 nbio=2" \
-            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=abc123 \
+            "$P_CLI dtls=1 dgram_packing=0 hs_timeout=500-10000 tickets=0 psk=73776f726466697368 \
              renegotiation=1 exchanges=4 debug_level=2 nbio=2 \
              force_ciphersuite=TLS-PSK-WITH-AES-128-CCM-8" \
             0 \