diff --git a/plat/arm/board/common/board_common.mk b/plat/arm/board/common/board_common.mk
index b11811c..1d0eb13 100644
--- a/plat/arm/board/common/board_common.mk
+++ b/plat/arm/board/common/board_common.mk
@@ -53,8 +53,8 @@
 ifndef ROT_KEY
 	$(error Cannot generate hash: no ROT_KEY defined)
 endif
-	openssl ${CRYPTO_ALG} -in $< -pubout -outform DER | openssl dgst \
-		-sha256 -binary > $@
+	${OPENSSL_BIN_PATH}/openssl ${CRYPTO_ALG} -in $< -pubout -outform DER | \
+	${OPENSSL_BIN_PATH}/openssl dgst -sha256 -binary > $@
 
 # Certificate NV-Counters. Use values corresponding to tied off values in
 # ARM development platforms
diff --git a/plat/hisilicon/hikey/platform.mk b/plat/hisilicon/hikey/platform.mk
index 3e1771c..2bfc582 100644
--- a/plat/hisilicon/hikey/platform.mk
+++ b/plat/hisilicon/hikey/platform.mk
@@ -154,12 +154,12 @@
 certificates: $(ROT_KEY)
 $(ROT_KEY): | $(BUILD_PLAT)
 	@echo "  OPENSSL $@"
-	$(Q)openssl genrsa 2048 > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl genrsa 2048 > $@ 2>/dev/null
 
 $(ROTPK_HASH): $(ROT_KEY)
 	@echo "  OPENSSL $@"
-	$(Q)openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
-	openssl dgst -sha256 -binary > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
+	${OPENSSL_BIN_PATH}/openssl dgst -sha256 -binary > $@ 2>/dev/null
 endif
 
 # Enable workarounds for selected Cortex-A53 errata.
diff --git a/plat/hisilicon/hikey960/platform.mk b/plat/hisilicon/hikey960/platform.mk
index 608fe09..c8ad66c 100644
--- a/plat/hisilicon/hikey960/platform.mk
+++ b/plat/hisilicon/hikey960/platform.mk
@@ -146,12 +146,12 @@
 certificates: $(ROT_KEY)
 $(ROT_KEY): | $(BUILD_PLAT)
 	@echo "  OPENSSL $@"
-	$(Q)openssl genrsa 2048 > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl genrsa 2048 > $@ 2>/dev/null
 
 $(ROTPK_HASH): $(ROT_KEY)
 	@echo "  OPENSSL $@"
-	$(Q)openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
-	openssl dgst -sha256 -binary > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
+	${OPENSSL_BIN_PATH}/openssl dgst -sha256 -binary > $@ 2>/dev/null
 endif
 
 # Enable workarounds for selected Cortex-A53 errata.
diff --git a/plat/imx/imx7/common/imx7.mk b/plat/imx/imx7/common/imx7.mk
index fdde9a9..f4f5bfc 100644
--- a/plat/imx/imx7/common/imx7.mk
+++ b/plat/imx/imx7/common/imx7.mk
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2018-2020, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2018-2022, ARM Limited and Contributors. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
@@ -80,13 +80,13 @@
 $(ROT_KEY): | $(BUILD_PLAT)
 	@echo "  OPENSSL $@"
 	@if [ ! -f $(ROT_KEY) ]; then \
-		openssl genrsa 2048 > $@ 2>/dev/null; \
+		${OPENSSL_BIN_PATH}/openssl genrsa 2048 > $@ 2>/dev/null; \
 	fi
 
 $(ROTPK_HASH): $(ROT_KEY)
 	@echo "  OPENSSL $@"
-	$(Q)openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
-	openssl dgst -sha256 -binary > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
+	${OPENSSL_BIN_PATH}/openssl dgst -sha256 -binary > $@ 2>/dev/null
 endif
 
 # Add the build options to pack BLx images and kernel device tree
diff --git a/plat/imx/imx8m/imx8mm/platform.mk b/plat/imx/imx8m/imx8mm/platform.mk
index 1c6c9f8..e3e5c0c 100644
--- a/plat/imx/imx8m/imx8mm/platform.mk
+++ b/plat/imx/imx8m/imx8mm/platform.mk
@@ -132,13 +132,13 @@
 $(ROT_KEY): | $(BUILD_PLAT)
 	@echo "  OPENSSL $@"
 	@if [ ! -f $(ROT_KEY) ]; then \
-		openssl genrsa 2048 > $@ 2>/dev/null; \
+		${OPENSSL_BIN_PATH}/openssl genrsa 2048 > $@ 2>/dev/null; \
 	fi
 
 $(ROTPK_HASH): $(ROT_KEY)
 	@echo "  OPENSSL $@"
-	$(Q)openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
-	openssl dgst -sha256 -binary > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
+	${OPENSSL_BIN_PATH}/openssl dgst -sha256 -binary > $@ 2>/dev/null
 endif
 
 USE_COHERENT_MEM	:=	1
diff --git a/plat/imx/imx8m/imx8mp/platform.mk b/plat/imx/imx8m/imx8mp/platform.mk
index 45f2972..e8669e5 100644
--- a/plat/imx/imx8m/imx8mp/platform.mk
+++ b/plat/imx/imx8m/imx8mp/platform.mk
@@ -129,13 +129,13 @@
 $(ROT_KEY): | $(BUILD_PLAT)
 	@echo "  OPENSSL $@"
 	@if [ ! -f $(ROT_KEY) ]; then \
-		openssl genrsa 2048 > $@ 2>/dev/null; \
+		${OPENSSL_BIN_PATH}/openssl genrsa 2048 > $@ 2>/dev/null; \
 	fi
 
 $(ROTPK_HASH): $(ROT_KEY)
 	@echo "  OPENSSL $@"
-	$(Q)openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
-	openssl dgst -sha256 -binary > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
+	${OPENSSL_BIN_PATH}/openssl dgst -sha256 -binary > $@ 2>/dev/null
 endif
 
 USE_COHERENT_MEM	:=	1
diff --git a/plat/marvell/armada/a3k/common/a3700_common.mk b/plat/marvell/armada/a3k/common/a3700_common.mk
index d0e8688..5547201 100644
--- a/plat/marvell/armada/a3k/common/a3700_common.mk
+++ b/plat/marvell/armada/a3k/common/a3700_common.mk
@@ -205,12 +205,12 @@
 	@$(ECHO_BLANK_LINE)
 	$(Q)cp $(BUILD_PLAT)/wtmi.bin $(BUILD_PLAT)/wtmi-align.bin
 	$(Q)truncate -s %16 $(BUILD_PLAT)/wtmi-align.bin
-	$(Q)openssl enc -aes-256-cbc -e -in $(BUILD_PLAT)/wtmi-align.bin \
+	$(Q)${OPENSSL_BIN_PATH}/openssl enc -aes-256-cbc -e -in $(BUILD_PLAT)/wtmi-align.bin \
 	-out $(BUILD_PLAT)/$(WTMI_ENC_IMG) \
 	-K `cat $(IMAGESPATH)/aes-256.txt` -nosalt \
 	-iv `cat $(IMAGESPATH)/iv.txt` -p
 	$(Q)truncate -s %16 $(BUILD_PLAT)/$(BOOT_IMAGE);
-	$(Q)openssl enc -aes-256-cbc -e -in $(BUILD_PLAT)/$(BOOT_IMAGE) \
+	$(Q)${OPENSSL_BIN_PATH}/openssl enc -aes-256-cbc -e -in $(BUILD_PLAT)/$(BOOT_IMAGE) \
 	-out $(BUILD_PLAT)/$(BOOT_ENC_IMAGE) \
 	-K `cat $(IMAGESPATH)/aes-256.txt` -nosalt \
 	-iv `cat $(IMAGESPATH)/iv.txt` -p
diff --git a/plat/nxp/common/tbbr/tbbr.mk b/plat/nxp/common/tbbr/tbbr.mk
index 7edcfbc..4aac9d6 100644
--- a/plat/nxp/common/tbbr/tbbr.mk
+++ b/plat/nxp/common/tbbr/tbbr.mk
@@ -133,13 +133,13 @@
     $(ROT_KEY): | $(BUILD_PLAT)
 	@echo "  OPENSSL $@"
 	@if [ ! -f $(ROT_KEY) ]; then \
-		openssl genrsa 2048 > $@ 2>/dev/null; \
+		${OPENSSL_BIN_PATH}/openssl genrsa 2048 > $@ 2>/dev/null; \
 	fi
 
     $(ROTPK_HASH): $(ROT_KEY)
 	@echo "  OPENSSL $@"
-	$(Q)openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
-	openssl dgst -sha256 -binary > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
+	${OPENSSL_BIN_PATH}/openssl dgst -sha256 -binary > $@ 2>/dev/null
 
 endif #MBEDTLS_DIR
 
diff --git a/plat/qemu/qemu/platform.mk b/plat/qemu/qemu/platform.mk
index 8e7f7c8..e0b5271 100644
--- a/plat/qemu/qemu/platform.mk
+++ b/plat/qemu/qemu/platform.mk
@@ -88,12 +88,12 @@
 
     $(ROT_KEY): | $(BUILD_PLAT)
 	@echo "  OPENSSL $@"
-	$(Q)openssl genrsa 2048 > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl genrsa 2048 > $@ 2>/dev/null
 
     $(ROTPK_HASH): $(ROT_KEY)
 	@echo "  OPENSSL $@"
-	$(Q)openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
-	openssl dgst -sha256 -binary > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
+	${OPENSSL_BIN_PATH}/openssl dgst -sha256 -binary > $@ 2>/dev/null
 endif
 
 # Include Measured Boot makefile before any Crypto library makefile.
diff --git a/plat/rpi/rpi3/platform.mk b/plat/rpi/rpi3/platform.mk
index 6c23923..53c97e2 100644
--- a/plat/rpi/rpi3/platform.mk
+++ b/plat/rpi/rpi3/platform.mk
@@ -212,10 +212,10 @@
 
     $(ROT_KEY): | $(BUILD_PLAT)
 	@echo "  OPENSSL $@"
-	$(Q)openssl genrsa 2048 > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl genrsa 2048 > $@ 2>/dev/null
 
     $(ROTPK_HASH): $(ROT_KEY)
 	@echo "  OPENSSL $@"
-	$(Q)openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
-	openssl dgst -sha256 -binary > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
+	${OPENSSL_BIN_PATH}/openssl dgst -sha256 -binary > $@ 2>/dev/null
 endif
diff --git a/plat/socionext/synquacer/platform.mk b/plat/socionext/synquacer/platform.mk
index 3eab3d6..b76ae88 100644
--- a/plat/socionext/synquacer/platform.mk
+++ b/plat/socionext/synquacer/platform.mk
@@ -73,12 +73,12 @@
 certificates: $(ROT_KEY)
 $(ROT_KEY): | $(BUILD_PLAT)
 	@echo "  OPENSSL $@"
-	$(Q)openssl genrsa 2048 > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl genrsa 2048 > $@ 2>/dev/null
 
 $(ROTPK_HASH): $(ROT_KEY)
 	@echo "  OPENSSL $@"
-	$(Q)openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
-	openssl dgst -sha256 -binary > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
+	${OPENSSL_BIN_PATH}/openssl dgst -sha256 -binary > $@ 2>/dev/null
 
 endif	# TRUSTED_BOARD_BOOT
 endif
diff --git a/plat/socionext/uniphier/platform.mk b/plat/socionext/uniphier/platform.mk
index 6edd181..378497a 100644
--- a/plat/socionext/uniphier/platform.mk
+++ b/plat/socionext/uniphier/platform.mk
@@ -107,12 +107,12 @@
 certificates: $(ROT_KEY)
 $(ROT_KEY): | $(BUILD_PLAT)
 	@echo "  OPENSSL $@"
-	$(Q)openssl genrsa 2048 > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl genrsa 2048 > $@ 2>/dev/null
 
 $(ROTPK_HASH): $(ROT_KEY)
 	@echo "  OPENSSL $@"
-	$(Q)openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
-	openssl dgst -sha256 -binary > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
+	${OPENSSL_BIN_PATH}/openssl dgst -sha256 -binary > $@ 2>/dev/null
 
 endif