diff --git a/tests/causal-consistency/causal-consistency-001.phpt b/tests/causal-consistency/causal-consistency-001.phpt
index 7dbd51800..4bdd706f1 100644
--- a/tests/causal-consistency/causal-consistency-001.phpt
+++ b/tests/causal-consistency/causal-consistency-001.phpt
@@ -2,6 +2,7 @@
 Causal consistency: new session has no operation time
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); ?>
 --FILE--
 <?php
diff --git a/tests/causal-consistency/causal-consistency-002.phpt b/tests/causal-consistency/causal-consistency-002.phpt
index b17cd55a9..16c13d157 100644
--- a/tests/causal-consistency/causal-consistency-002.phpt
+++ b/tests/causal-consistency/causal-consistency-002.phpt
@@ -2,6 +2,7 @@
 Causal consistency: first read in session does not include afterClusterTime
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); ?>
 --FILE--
 <?php
diff --git a/tests/causal-consistency/causal-consistency-003.phpt b/tests/causal-consistency/causal-consistency-003.phpt
index ce99a15f1..8da302786 100644
--- a/tests/causal-consistency/causal-consistency-003.phpt
+++ b/tests/causal-consistency/causal-consistency-003.phpt
@@ -2,6 +2,7 @@
 Causal consistency: first read or write in session updates operationTime
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); CLEANUP(REPLICASET); ?>
 --FILE--
 <?php
diff --git a/tests/causal-consistency/causal-consistency-004.phpt b/tests/causal-consistency/causal-consistency-004.phpt
index 2ad835114..6212f497c 100644
--- a/tests/causal-consistency/causal-consistency-004.phpt
+++ b/tests/causal-consistency/causal-consistency-004.phpt
@@ -2,6 +2,7 @@
 Causal consistency: first read or write in session updates operationTime (even on error)
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); CLEANUP(REPLICASET); ?>
 --FILE--
 <?php
diff --git a/tests/causal-consistency/causal-consistency-005.phpt b/tests/causal-consistency/causal-consistency-005.phpt
index 987c7befd..451df4f04 100644
--- a/tests/causal-consistency/causal-consistency-005.phpt
+++ b/tests/causal-consistency/causal-consistency-005.phpt
@@ -2,6 +2,7 @@
 Causal consistency: second read's afterClusterTime uses last reply's operationTime
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); CLEANUP(REPLICASET);  ?>
 --FILE--
 <?php
diff --git a/tests/causal-consistency/causal-consistency-006.phpt b/tests/causal-consistency/causal-consistency-006.phpt
index ce59879dd..d5524ee8d 100644
--- a/tests/causal-consistency/causal-consistency-006.phpt
+++ b/tests/causal-consistency/causal-consistency-006.phpt
@@ -2,6 +2,7 @@
 Causal consistency: second read's afterClusterTime uses last reply's operationTime (even on error)
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); CLEANUP(REPLICASET);  ?>
 --FILE--
 <?php
diff --git a/tests/causal-consistency/causal-consistency-007.phpt b/tests/causal-consistency/causal-consistency-007.phpt
index 9914db8a7..d222b24a8 100644
--- a/tests/causal-consistency/causal-consistency-007.phpt
+++ b/tests/causal-consistency/causal-consistency-007.phpt
@@ -2,6 +2,7 @@
 Causal consistency: reads in non-causally consistent session never include afterClusterTime
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); ?>
 --FILE--
 <?php
diff --git a/tests/causal-consistency/causal-consistency-008.phpt b/tests/causal-consistency/causal-consistency-008.phpt
index 48aece5bd..50e2ae15a 100644
--- a/tests/causal-consistency/causal-consistency-008.phpt
+++ b/tests/causal-consistency/causal-consistency-008.phpt
@@ -2,6 +2,7 @@
 Causal consistency: default read concern includes afterClusterTime but not level
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); ?>
 --FILE--
 <?php
diff --git a/tests/causal-consistency/causal-consistency-009.phpt b/tests/causal-consistency/causal-consistency-009.phpt
index 76e83fd67..7c00694d0 100644
--- a/tests/causal-consistency/causal-consistency-009.phpt
+++ b/tests/causal-consistency/causal-consistency-009.phpt
@@ -2,6 +2,7 @@
 Causal consistency: custom read concern merges afterClusterTime and level
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); ?>
 --FILE--
 <?php
diff --git a/tests/causal-consistency/causal-consistency-010.phpt b/tests/causal-consistency/causal-consistency-010.phpt
index cfef769f5..7d3407e82 100644
--- a/tests/causal-consistency/causal-consistency-010.phpt
+++ b/tests/causal-consistency/causal-consistency-010.phpt
@@ -2,6 +2,7 @@
 Causal consistency: unacknowledged write does not update operationTime
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); CLEANUP(REPLICASET); ?>
 --FILE--
 <?php
diff --git a/tests/causal-consistency/causal-consistency-011.phpt b/tests/causal-consistency/causal-consistency-011.phpt
index ef4b79231..4107d38ea 100644
--- a/tests/causal-consistency/causal-consistency-011.phpt
+++ b/tests/causal-consistency/causal-consistency-011.phpt
@@ -2,6 +2,7 @@
 Causal consistency: $clusterTime is not sent in commands to unsupported deployments
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('STANDALONE'); NEEDS_ATLEAST_MONGODB_VERSION(STANDALONE, "3.6"); ?>
 --FILE--
 <?php
diff --git a/tests/causal-consistency/causal-consistency-012.phpt b/tests/causal-consistency/causal-consistency-012.phpt
index 257b5fc39..db2cb24c0 100644
--- a/tests/causal-consistency/causal-consistency-012.phpt
+++ b/tests/causal-consistency/causal-consistency-012.phpt
@@ -2,6 +2,7 @@
 Causal consistency: $clusterTime is sent in commands to supported deployments
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); ?>
 --FILE--
 <?php
diff --git a/tests/connect/bug0720.phpt b/tests/connect/bug0720.phpt
index d31bbedaf..802b87d7d 100644
--- a/tests/connect/bug0720.phpt
+++ b/tests/connect/bug0720.phpt
@@ -2,6 +2,7 @@
 PHPC-720: Do not persist SSL streams to avoid SSL reinitialization errors
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_SSL(); ?>
 <?php NEEDS('STANDALONE_SSL'); ?>
 --FILE--
 <?php
diff --git a/tests/connect/bug1045.phpt b/tests/connect/bug1045.phpt
index ab35b8e6e..bfc8b91b8 100644
--- a/tests/connect/bug1045.phpt
+++ b/tests/connect/bug1045.phpt
@@ -2,6 +2,7 @@
 PHPC-1045: Segfault if username is not provided for SCRAM-SHA-1 authMechanism
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_SSL(); ?>
 <?php NEEDS('STANDALONE'); CLEANUP(STANDALONE); ?>
 --FILE--
 <?php
diff --git a/tests/connect/standalone-plain-0002.phpt b/tests/connect/standalone-plain-0002.phpt
index f6d67fb31..8a3d40155 100644
--- a/tests/connect/standalone-plain-0002.phpt
+++ b/tests/connect/standalone-plain-0002.phpt
@@ -2,6 +2,7 @@
 Connect to MongoDB with using PLAIN auth mechanism #002
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_SSL(); ?>
 <?php NEEDS('STANDALONE_PLAIN'); ?>
 --FILE--
 <?php
diff --git a/tests/connect/standalone-ssl-no_verify-001.phpt b/tests/connect/standalone-ssl-no_verify-001.phpt
index cc813d87a..0cd0afa2b 100644
--- a/tests/connect/standalone-ssl-no_verify-001.phpt
+++ b/tests/connect/standalone-ssl-no_verify-001.phpt
@@ -2,6 +2,7 @@
 Connect to MongoDB with SSL and no host/cert verification
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_SSL(); ?>
 <?php NEEDS('STANDALONE_SSL'); ?>
 --FILE--
 <?php
diff --git a/tests/connect/standalone-ssl-no_verify-002.phpt b/tests/connect/standalone-ssl-no_verify-002.phpt
index 574fa10c3..49f91f814 100644
--- a/tests/connect/standalone-ssl-no_verify-002.phpt
+++ b/tests/connect/standalone-ssl-no_verify-002.phpt
@@ -2,6 +2,7 @@
 Connect to MongoDB with SSL and no host/cert verification (context options)
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_SSL(); ?>
 <?php NEEDS('STANDALONE_SSL'); ?>
 --FILE--
 <?php
diff --git a/tests/connect/standalone-ssl-verify_cert-001.phpt b/tests/connect/standalone-ssl-verify_cert-001.phpt
index 9d438488c..304caa6ad 100644
--- a/tests/connect/standalone-ssl-verify_cert-001.phpt
+++ b/tests/connect/standalone-ssl-verify_cert-001.phpt
@@ -2,6 +2,7 @@
 Connect to MongoDB with SSL and cert verification
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_SSL(); ?>
 <?php NEEDS('STANDALONE_SSL'); ?>
 --FILE--
 <?php
diff --git a/tests/connect/standalone-ssl-verify_cert-002.phpt b/tests/connect/standalone-ssl-verify_cert-002.phpt
index 9c4ac9590..645eab515 100644
--- a/tests/connect/standalone-ssl-verify_cert-002.phpt
+++ b/tests/connect/standalone-ssl-verify_cert-002.phpt
@@ -2,6 +2,7 @@
 Connect to MongoDB with SSL and cert verification (context options)
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_SSL(); ?>
 <?php NEEDS('STANDALONE_SSL'); ?>
 --FILE--
 <?php
diff --git a/tests/connect/standalone-ssl-verify_cert-error-001.phpt b/tests/connect/standalone-ssl-verify_cert-error-001.phpt
index 776d1105a..299503d4c 100644
--- a/tests/connect/standalone-ssl-verify_cert-error-001.phpt
+++ b/tests/connect/standalone-ssl-verify_cert-error-001.phpt
@@ -2,6 +2,7 @@
 Connect to MongoDB with SSL and cert verification error
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_SSL(); ?>
 <?php NEEDS('STANDALONE_SSL'); ?>
 --FILE--
 <?php
diff --git a/tests/connect/standalone-ssl-verify_cert-error-002.phpt b/tests/connect/standalone-ssl-verify_cert-error-002.phpt
index 5ac2eefd6..ddc729685 100644
--- a/tests/connect/standalone-ssl-verify_cert-error-002.phpt
+++ b/tests/connect/standalone-ssl-verify_cert-error-002.phpt
@@ -2,6 +2,7 @@
 Connect to MongoDB with SSL and cert verification error (context options)
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_SSL(); ?>
 <?php NEEDS('STANDALONE_SSL'); ?>
 --FILE--
 <?php
diff --git a/tests/connect/standalone-x509-auth-001.phpt b/tests/connect/standalone-x509-auth-001.phpt
index aa2f4fdcf..01f45cdf8 100644
--- a/tests/connect/standalone-x509-auth-001.phpt
+++ b/tests/connect/standalone-x509-auth-001.phpt
@@ -2,6 +2,7 @@
 Connect to MongoDB with SSL and X509 auth
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_SSL(); ?>
 <?php NEEDS('STANDALONE_X509'); ?>
 --FILE--
 <?php
diff --git a/tests/connect/standalone-x509-auth-002.phpt b/tests/connect/standalone-x509-auth-002.phpt
index 78785f51a..ea4e1293a 100644
--- a/tests/connect/standalone-x509-auth-002.phpt
+++ b/tests/connect/standalone-x509-auth-002.phpt
@@ -2,6 +2,7 @@
 Connect to MongoDB with SSL and X509 auth (stream context)
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_SSL(); ?>
 <?php NEEDS('STANDALONE_X509'); ?>
 --FILE--
 <?php
diff --git a/tests/connect/standalone-x509-error-0001.phpt b/tests/connect/standalone-x509-error-0001.phpt
index 4196e6b1a..1258211d3 100644
--- a/tests/connect/standalone-x509-error-0001.phpt
+++ b/tests/connect/standalone-x509-error-0001.phpt
@@ -2,6 +2,7 @@
 X509 connection should not reuse previous stream after an auth failure
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_SSL(); ?>
 <?php NEEDS('STANDALONE_X509'); ?>
 --FILE--
 <?php
diff --git a/tests/manager/bug0572.phpt b/tests/manager/bug0572.phpt
index 8f846983c..0a1c09e97 100644
--- a/tests/manager/bug0572.phpt
+++ b/tests/manager/bug0572.phpt
@@ -2,6 +2,7 @@
 PHPC-572: Ensure stream context does not go out of scope before socket init
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_SSL(); ?>
 <?php NEEDS('STANDALONE_SSL'); ?>
 --FILE--
 <?php
diff --git a/tests/manager/manager-ctor-ssl-001.phpt b/tests/manager/manager-ctor-ssl-001.phpt
index ca070ef52..d1339f8d3 100644
--- a/tests/manager/manager-ctor-ssl-001.phpt
+++ b/tests/manager/manager-ctor-ssl-001.phpt
@@ -1,5 +1,8 @@
 --TEST--
 MongoDB\Driver\Manager::__construct(): ssl option does not require driverOptions
+--SKIPIF--
+<?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_SSL(); ?>
 --FILE--
 <?php
 
diff --git a/tests/manager/manager-set-uri-options-002.phpt b/tests/manager/manager-set-uri-options-002.phpt
index 0be8bc9a6..e20ccac97 100644
--- a/tests/manager/manager-set-uri-options-002.phpt
+++ b/tests/manager/manager-set-uri-options-002.phpt
@@ -2,6 +2,7 @@
 MongoDB\Driver\Manager: Logging into MongoDB using credentials from $options
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_SSL(); ?>
 <?php NEEDS('STANDALONE_SSL'); ?>
 --FILE--
 <?php
diff --git a/tests/retryable-writes/retryable-writes-001.phpt b/tests/retryable-writes/retryable-writes-001.phpt
index 032f60260..0d5e68740 100644
--- a/tests/retryable-writes/retryable-writes-001.phpt
+++ b/tests/retryable-writes/retryable-writes-001.phpt
@@ -2,6 +2,7 @@
 Retryable writes: supported single-statement operations include transaction IDs
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); CLEANUP(REPLICASET); ?>
 --FILE--
 <?php
diff --git a/tests/retryable-writes/retryable-writes-002.phpt b/tests/retryable-writes/retryable-writes-002.phpt
index bcfde7f43..a1fab305e 100644
--- a/tests/retryable-writes/retryable-writes-002.phpt
+++ b/tests/retryable-writes/retryable-writes-002.phpt
@@ -2,6 +2,7 @@
 Retryable writes: supported multi-statement operations include transaction IDs
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); CLEANUP(REPLICASET); ?>
 --FILE--
 <?php
diff --git a/tests/retryable-writes/retryable-writes-003.phpt b/tests/retryable-writes/retryable-writes-003.phpt
index e7bff66f0..bcd4f9444 100644
--- a/tests/retryable-writes/retryable-writes-003.phpt
+++ b/tests/retryable-writes/retryable-writes-003.phpt
@@ -2,6 +2,7 @@
 Retryable writes: unsupported operations do not include transaction IDs
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); CLEANUP(REPLICASET); ?>
 --FILE--
 <?php
diff --git a/tests/retryable-writes/retryable-writes-004.phpt b/tests/retryable-writes/retryable-writes-004.phpt
index ac8e9c7b1..9058f7f3c 100644
--- a/tests/retryable-writes/retryable-writes-004.phpt
+++ b/tests/retryable-writes/retryable-writes-004.phpt
@@ -4,6 +4,7 @@ Retryable writes: unacknowledged write operations do not include transaction IDs
 Depends on CDRIVER-2432
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); CLEANUP(REPLICASET); ?>
 --FILE--
 <?php
diff --git a/tests/retryable-writes/retryable-writes-005.phpt b/tests/retryable-writes/retryable-writes-005.phpt
index ec341f12c..af033d762 100644
--- a/tests/retryable-writes/retryable-writes-005.phpt
+++ b/tests/retryable-writes/retryable-writes-005.phpt
@@ -2,6 +2,7 @@
 Retryable writes: non-write command methods do not include transaction IDs
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); CLEANUP(REPLICASET); ?>
 --FILE--
 <?php
diff --git a/tests/session/session-001.phpt b/tests/session/session-001.phpt
index 8a4046a72..7516e7e3d 100644
--- a/tests/session/session-001.phpt
+++ b/tests/session/session-001.phpt
@@ -2,6 +2,7 @@
 MongoDB\Driver\Session spec test: Pool is LIFO
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('STANDALONE'); NEEDS_ATLEAST_MONGODB_VERSION(STANDALONE, "3.6"); ?>
 --FILE--
 <?php
diff --git a/tests/session/session-002.phpt b/tests/session/session-002.phpt
index 02613e7c3..9521e7da9 100644
--- a/tests/session/session-002.phpt
+++ b/tests/session/session-002.phpt
@@ -2,6 +2,7 @@
 MongoDB\Driver\Session spec test: $clusterTime in commands
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); CLEANUP(REPLICASET); ?>
 --FILE--
 <?php
diff --git a/tests/session/session-003.phpt b/tests/session/session-003.phpt
index 54a8d086c..7e6380350 100644
--- a/tests/session/session-003.phpt
+++ b/tests/session/session-003.phpt
@@ -2,6 +2,7 @@
 MongoDB\Driver\Session spec test: session cannot be used for different clients
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('STANDALONE'); NEEDS_ATLEAST_MONGODB_VERSION(STANDALONE, "3.6"); CLEANUP(STANDALONE); ?>
 --FILE--
 <?php
diff --git a/tests/session/session-advanceClusterTime-001.phpt b/tests/session/session-advanceClusterTime-001.phpt
index be1fc6c8e..2cc4f0981 100644
--- a/tests/session/session-advanceClusterTime-001.phpt
+++ b/tests/session/session-advanceClusterTime-001.phpt
@@ -2,6 +2,7 @@
 MongoDB\Driver\Session::advanceClusterTime()
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); ?>
 --FILE--
 <?php
diff --git a/tests/session/session-advanceOperationTime-001.phpt b/tests/session/session-advanceOperationTime-001.phpt
index 6467c8127..494a12f96 100644
--- a/tests/session/session-advanceOperationTime-001.phpt
+++ b/tests/session/session-advanceOperationTime-001.phpt
@@ -2,6 +2,7 @@
 MongoDB\Driver\Session::advanceOperationTime()
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); ?>
 --FILE--
 <?php
diff --git a/tests/session/session-advanceOperationTime-002.phpt b/tests/session/session-advanceOperationTime-002.phpt
index e590cd610..c19e5b8b1 100644
--- a/tests/session/session-advanceOperationTime-002.phpt
+++ b/tests/session/session-advanceOperationTime-002.phpt
@@ -2,6 +2,7 @@
 MongoDB\Driver\Session::advanceOperationTime() with Timestamp
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); ?>
 --FILE--
 <?php
diff --git a/tests/session/session-advanceOperationTime-003.phpt b/tests/session/session-advanceOperationTime-003.phpt
index 34b46c32e..de8a02251 100644
--- a/tests/session/session-advanceOperationTime-003.phpt
+++ b/tests/session/session-advanceOperationTime-003.phpt
@@ -2,6 +2,7 @@
 MongoDB\Driver\Session::advanceOperationTime() with TimestampInterface
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); ?>
 --FILE--
 <?php
diff --git a/tests/session/session-advanceOperationTime_error-001.phpt b/tests/session/session-advanceOperationTime_error-001.phpt
index 682544771..deb16db3e 100644
--- a/tests/session/session-advanceOperationTime_error-001.phpt
+++ b/tests/session/session-advanceOperationTime_error-001.phpt
@@ -2,6 +2,7 @@
 MongoDB\Driver\Session::advanceOperationTime() with TimestampInterface exceptions
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); ?>
 --FILE--
 <?php
diff --git a/tests/session/session-debug-001.phpt b/tests/session/session-debug-001.phpt
index 43552c949..89d95ba0f 100644
--- a/tests/session/session-debug-001.phpt
+++ b/tests/session/session-debug-001.phpt
@@ -2,6 +2,7 @@
 MongoDB\Driver\Session debug output (before an operation)
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('STANDALONE'); NEEDS_ATLEAST_MONGODB_VERSION(STANDALONE, "3.6"); ?>
 --FILE--
 <?php
diff --git a/tests/session/session-debug-002.phpt b/tests/session/session-debug-002.phpt
index 502d0a87c..0de46fec1 100644
--- a/tests/session/session-debug-002.phpt
+++ b/tests/session/session-debug-002.phpt
@@ -2,6 +2,7 @@
 MongoDB\Driver\Session debug output (after an operation)
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); ?>
 --FILE--
 <?php
diff --git a/tests/session/session-debug-003.phpt b/tests/session/session-debug-003.phpt
index d41afac8d..eb61cfa62 100644
--- a/tests/session/session-debug-003.phpt
+++ b/tests/session/session-debug-003.phpt
@@ -2,6 +2,7 @@
 MongoDB\Driver\Session debug output (causalConsistency=false)
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('STANDALONE'); NEEDS_ATLEAST_MONGODB_VERSION(STANDALONE, "3.6"); ?>
 --FILE--
 <?php
diff --git a/tests/session/session-getClusterTime-001.phpt b/tests/session/session-getClusterTime-001.phpt
index bdfe62856..374714f8b 100644
--- a/tests/session/session-getClusterTime-001.phpt
+++ b/tests/session/session-getClusterTime-001.phpt
@@ -2,6 +2,7 @@
 MongoDB\Driver\Session::getClusterTime()
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); ?>
 --FILE--
 <?php
diff --git a/tests/session/session-getLogicalSessionId-001.phpt b/tests/session/session-getLogicalSessionId-001.phpt
index 5d15c8f9a..ae0ebaeda 100644
--- a/tests/session/session-getLogicalSessionId-001.phpt
+++ b/tests/session/session-getLogicalSessionId-001.phpt
@@ -2,6 +2,7 @@
 MongoDB\Driver\Session::getLogicalSessionId()
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('STANDALONE'); NEEDS_ATLEAST_MONGODB_VERSION(STANDALONE, "3.6"); ?>
 --FILE--
 <?php
diff --git a/tests/session/session-getOperationTime-001.phpt b/tests/session/session-getOperationTime-001.phpt
index acb84b898..0add568dc 100644
--- a/tests/session/session-getOperationTime-001.phpt
+++ b/tests/session/session-getOperationTime-001.phpt
@@ -2,6 +2,7 @@
 MongoDB\Driver\Session::getOperationTime()
 --SKIPIF--
 <?php require __DIR__ . "/../utils/basic-skipif.inc"; ?>
+<?php NEEDS_CRYPTO(); ?>
 <?php NEEDS('REPLICASET'); ?>
 --FILE--
 <?php
diff --git a/tests/utils/tools.php b/tests/utils/tools.php
index 902611705..19e0cdeda 100644
--- a/tests/utils/tools.php
+++ b/tests/utils/tools.php
@@ -175,15 +175,56 @@ function NEEDS_STORAGE_ENGINE($uri, $engine) {
     }
 }
 
-/* Checks that libmongoc is using one of the following SSL libraries, denoted by
- * the value of "libmongoc SSL library" in phpinfo() output. Possible values are
- * "OpenSSL", "LibreSSL", "Secure Transport", and "Secure Channel". */
-function NEEDS_SSL(array $libs)
+/* Checks that libmongoc supports crypto. If one or more libaries are provided,
+ * additionally check the value of "libmongoc crypto library" as reported by
+ * phpinfo(). Possible values are "libcrypto", "Common Crypto", and "CNG". */
+function NEEDS_CRYPTO(array $libs = [])
 {
     ob_start();
     phpinfo(INFO_MODULES);
     $info = ob_get_clean();
 
+    $pattern = sprintf('/^%s$/m', preg_quote('libmongoc crypto => enabled'));
+
+    if (preg_match($pattern, $info) !== 1) {
+        exit('skip Crypto is not supported');
+    }
+
+    if (empty($libs)) {
+        return;
+    }
+
+    $pattern = sprintf('/^%s([\w ]+)$/m', preg_quote('libmongoc crypto library => '));
+
+    if (preg_match($pattern, $info, $matches) !== 1) {
+        exit('skip Could not determine crypto library');
+    }
+
+    if (!in_array($matches[1], $libs)) {
+        exit('skip Needs crypto library ' . implode(', ', $libs) . ', but found ' . $matches[1]);
+    }
+}
+
+/* Checks that libmongoc supports SSL. If one or more libaries are provided,
+ * additionally check the value of "libmongoc SSL library" as reported by
+ * phpinfo(). Possible values are "OpenSSL", "LibreSSL", "Secure Transport", and
+ * "Secure Channel". */
+function NEEDS_SSL(array $libs = [])
+{
+    ob_start();
+    phpinfo(INFO_MODULES);
+    $info = ob_get_clean();
+
+    $pattern = sprintf('/^%s$/m', preg_quote('libmongoc SSL => enabled'));
+
+    if (preg_match($pattern, $info) !== 1) {
+        exit('skip SSL is not supported');
+    }
+
+    if (empty($libs)) {
+        return;
+    }
+
     $pattern = sprintf('/^%s([\w ]+)$/m', preg_quote('libmongoc SSL library => '));
 
     if (preg_match($pattern, $info, $matches) !== 1) {