diff --git a/block/Kconfig b/block/Kconfig
index 50b17e260fa2..f65169e9356b 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -182,6 +182,7 @@ config BLK_DEBUG_FS_ZONED
 
 config BLK_SED_OPAL
 	bool "Logic for interfacing with Opal enabled SEDs"
+	depends on KEYS
 	help
 	Builds Logic for interfacing with Opal enabled controllers.
 	Enabling this option enables users to setup/unlock/lock
diff --git a/block/sed-opal.c b/block/sed-opal.c
index feba36e54ae0..4cfc3458cba5 100644
--- a/block/sed-opal.c
+++ b/block/sed-opal.c
@@ -20,6 +20,10 @@
 #include <linux/sed-opal.h>
 #include <linux/string.h>
 #include <linux/kdev_t.h>
+#include <linux/key.h>
+#include <linux/key-type.h>
+#include <linux/arch_vars.h>
+#include <keys/user-type.h>
 
 #include "opal_proto.h"
 
@@ -29,6 +33,8 @@
 /* Number of bytes needed by cmd_finalize. */
 #define CMD_FINALIZE_BYTES_NEEDED 7
 
+static struct key *sed_opal_keyring;
+
 struct opal_step {
 	int (*fn)(struct opal_dev *dev, void *data);
 	void *data;
@@ -266,6 +272,107 @@ static void print_buffer(const u8 *ptr, u32 length)
 #endif
 }
 
+/*
+ * Allocate/update a SED Opal key and add it to the SED Opal keyring.
+ */
+static int update_sed_opal_key(const char *desc, u_char *key_data, int keylen)
+{
+	int ret;
+	struct key *key;
+
+	if (!sed_opal_keyring)
+		return -ENOKEY;
+
+	key = key_alloc(&key_type_user, desc, GLOBAL_ROOT_UID, GLOBAL_ROOT_GID,
+			current_cred(),
+			KEY_USR_VIEW | KEY_USR_SEARCH | KEY_USR_WRITE,
+			0,
+			NULL);
+	if (IS_ERR(key))
+		return PTR_ERR(key);
+
+	ret = key_instantiate_and_link(key, key_data, keylen,
+				       sed_opal_keyring, NULL);
+	key_put(key);
+
+	return ret;
+}
+
+/*
+ * Read a SED Opal key from the SED Opal keyring.
+ */
+static int read_sed_opal_key(const char *key_name, u_char *buffer, int buflen)
+{
+	int ret;
+	key_ref_t kref;
+	struct key *key;
+
+	if (!sed_opal_keyring)
+		return -ENOKEY;
+
+	kref = keyring_search(make_key_ref(sed_opal_keyring, true),
+			      &key_type_user,
+			      key_name,
+			      true);
+
+	if (IS_ERR(kref)) {
+		ret = PTR_ERR(kref);
+	} else {
+		key = key_ref_to_ptr(kref);
+		down_read(&key->sem);
+		ret = key_validate(key);
+		if (ret == 0) {
+			if (buflen > key->datalen)
+				buflen = key->datalen;
+
+			ret = key->type->read(key, (char *)buffer, buflen);
+		}
+		up_read(&key->sem);
+
+		key_ref_put(kref);
+	}
+
+	return ret;
+}
+
+static int opal_get_key(struct opal_dev *dev, struct opal_key *key)
+{
+	int ret = 0;
+
+	switch (key->key_type) {
+	case OPAL_INCLUDED:
+		/* the key is ready to use */
+		break;
+	case OPAL_KEYRING:
+		/* the key is in the keyring */
+		ret = read_sed_opal_key(OPAL_AUTH_KEY, key->key, OPAL_KEY_MAX);
+		if (ret > 0) {
+			if (ret > 255) {
+				ret = -ENOSPC;
+				goto error;
+			}
+			key->key_len = ret;
+			key->key_type = OPAL_INCLUDED;
+		}
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+	if (ret < 0)
+		goto error;
+
+	/* must have a PEK by now or it's an error */
+	if (key->key_type != OPAL_INCLUDED || key->key_len == 0) {
+		ret = -EINVAL;
+		goto error;
+	}
+	return 0;
+error:
+	pr_debug("Error getting password: %d\n", ret);
+	return ret;
+}
+
 static bool check_tper(const void *data)
 {
 	const struct d0_tper_features *tper = data;
@@ -2203,6 +2310,9 @@ static int opal_secure_erase_locking_range(struct opal_dev *dev,
 	};
 	int ret;
 
+	ret = opal_get_key(dev, &opal_session->opal_key);
+	if (ret)
+		return ret;
 	mutex_lock(&dev->dev_lock);
 	setup_opal_dev(dev);
 	ret = execute_steps(dev, erase_steps, ARRAY_SIZE(erase_steps));
@@ -2236,6 +2346,9 @@ static int opal_revertlsp(struct opal_dev *dev, struct opal_revert_lsp *rev)
 	};
 	int ret;
 
+	ret = opal_get_key(dev, &rev->key);
+	if (ret)
+		return ret;
 	mutex_lock(&dev->dev_lock);
 	setup_opal_dev(dev);
 	ret = execute_steps(dev, steps, ARRAY_SIZE(steps));
@@ -2254,6 +2367,9 @@ static int opal_erase_locking_range(struct opal_dev *dev,
 	};
 	int ret;
 
+	ret = opal_get_key(dev, &opal_session->opal_key);
+	if (ret)
+		return ret;
 	mutex_lock(&dev->dev_lock);
 	setup_opal_dev(dev);
 	ret = execute_steps(dev, erase_steps, ARRAY_SIZE(erase_steps));
@@ -2282,6 +2398,9 @@ static int opal_enable_disable_shadow_mbr(struct opal_dev *dev,
 	    opal_mbr->enable_disable != OPAL_MBR_DISABLE)
 		return -EINVAL;
 
+	ret = opal_get_key(dev, &opal_mbr->key);
+	if (ret)
+		return ret;
 	mutex_lock(&dev->dev_lock);
 	setup_opal_dev(dev);
 	ret = execute_steps(dev, mbr_steps, ARRAY_SIZE(mbr_steps));
@@ -2307,6 +2426,9 @@ static int opal_set_mbr_done(struct opal_dev *dev,
 	    mbr_done->done_flag != OPAL_MBR_NOT_DONE)
 		return -EINVAL;
 
+	ret = opal_get_key(dev, &mbr_done->key);
+	if (ret)
+		return ret;
 	mutex_lock(&dev->dev_lock);
 	setup_opal_dev(dev);
 	ret = execute_steps(dev, mbr_steps, ARRAY_SIZE(mbr_steps));
@@ -2328,6 +2450,9 @@ static int opal_write_shadow_mbr(struct opal_dev *dev,
 	if (info->size == 0)
 		return 0;
 
+	ret = opal_get_key(dev, &info->key);
+	if (ret)
+		return ret;
 	mutex_lock(&dev->dev_lock);
 	setup_opal_dev(dev);
 	ret = execute_steps(dev, mbr_steps, ARRAY_SIZE(mbr_steps));
@@ -2384,6 +2509,9 @@ static int opal_add_user_to_lr(struct opal_dev *dev,
 		return -EINVAL;
 	}
 
+	ret = opal_get_key(dev, &lk_unlk->session.opal_key);
+	if (ret)
+		return ret;
 	mutex_lock(&dev->dev_lock);
 	setup_opal_dev(dev);
 	ret = execute_steps(dev, steps, ARRAY_SIZE(steps));
@@ -2406,6 +2534,10 @@ static int opal_reverttper(struct opal_dev *dev, struct opal_key *opal, bool psi
 
 	int ret;
 
+	ret = opal_get_key(dev, opal);
+
+	if (ret)
+		return ret;
 	mutex_lock(&dev->dev_lock);
 	setup_opal_dev(dev);
 	if (psid)
@@ -2468,6 +2600,9 @@ static int opal_lock_unlock(struct opal_dev *dev,
 	if (lk_unlk->session.who > OPAL_USER9)
 		return -EINVAL;
 
+	ret = opal_get_key(dev, &lk_unlk->session.opal_key);
+	if (ret)
+		return ret;
 	mutex_lock(&dev->dev_lock);
 	ret = __opal_lock_unlock(dev, lk_unlk);
 	mutex_unlock(&dev->dev_lock);
@@ -2490,6 +2625,9 @@ static int opal_take_ownership(struct opal_dev *dev, struct opal_key *opal)
 	if (!dev)
 		return -ENODEV;
 
+	ret = opal_get_key(dev, opal);
+	if (ret)
+		return ret;
 	mutex_lock(&dev->dev_lock);
 	setup_opal_dev(dev);
 	ret = execute_steps(dev, owner_steps, ARRAY_SIZE(owner_steps));
@@ -2512,6 +2650,9 @@ static int opal_activate_lsp(struct opal_dev *dev,
 	if (!opal_lr_act->num_lrs || opal_lr_act->num_lrs > OPAL_MAX_LRS)
 		return -EINVAL;
 
+	ret = opal_get_key(dev, &opal_lr_act->key);
+	if (ret)
+		return ret;
 	mutex_lock(&dev->dev_lock);
 	setup_opal_dev(dev);
 	ret = execute_steps(dev, active_steps, ARRAY_SIZE(active_steps));
@@ -2530,6 +2671,9 @@ static int opal_setup_locking_range(struct opal_dev *dev,
 	};
 	int ret;
 
+	ret = opal_get_key(dev, &opal_lrs->session.opal_key);
+	if (ret)
+		return ret;
 	mutex_lock(&dev->dev_lock);
 	setup_opal_dev(dev);
 	ret = execute_steps(dev, lr_steps, ARRAY_SIZE(lr_steps));
@@ -2556,6 +2700,19 @@ static int opal_set_new_pw(struct opal_dev *dev, struct opal_new_pw *opal_pw)
 	ret = execute_steps(dev, pw_steps, ARRAY_SIZE(pw_steps));
 	mutex_unlock(&dev->dev_lock);
 
+	if (ret == 0) {
+		/* update keyring and arch var with new password */
+		ret = arch_write_variable(ARCH_VAR_OPAL_KEY, OPAL_AUTH_KEY,
+					 opal_pw->new_user_pw.opal_key.key,
+					 opal_pw->new_user_pw.opal_key.key_len);
+		if (ret != -EOPNOTSUPP)
+			pr_warn("error updating SED key: %d\n", ret);
+
+		ret = update_sed_opal_key(OPAL_AUTH_KEY,
+					 opal_pw->new_user_pw.opal_key.key,
+					 opal_pw->new_user_pw.opal_key.key_len);
+	}
+
 	return ret;
 }
 
@@ -2576,6 +2733,9 @@ static int opal_activate_user(struct opal_dev *dev,
 		return -EINVAL;
 	}
 
+	ret = opal_get_key(dev, &opal_session->opal_key);
+	if (ret)
+		return ret;
 	mutex_lock(&dev->dev_lock);
 	setup_opal_dev(dev);
 	ret = execute_steps(dev, act_steps, ARRAY_SIZE(act_steps));
@@ -2662,6 +2822,9 @@ static int opal_generic_read_write_table(struct opal_dev *dev,
 {
 	int ret, bit_set;
 
+	ret = opal_get_key(dev, &rw_tbl->key);
+	if (ret)
+		return ret;
 	mutex_lock(&dev->dev_lock);
 	setup_opal_dev(dev);
 
@@ -2693,9 +2856,9 @@ int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *arg)
 	if (!capable(CAP_SYS_ADMIN))
 		return -EACCES;
 	if (!dev)
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 	if (!dev->supported)
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	p = memdup_user(arg, _IOC_SIZE(cmd));
 	if (IS_ERR(p))
@@ -2756,7 +2919,6 @@ int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *arg)
 	case IOC_OPAL_DISCOVERY:
 		ret = opal_get_discv(dev, p);
 		break;
-
 	default:
 		break;
 	}
@@ -2765,3 +2927,33 @@ int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *arg)
 	return ret;
 }
 EXPORT_SYMBOL_GPL(sed_ioctl);
+
+static int __init sed_opal_init(void)
+{
+	int ret;
+	struct key *kr;
+	char init_sed_key[OPAL_KEY_MAX];
+	int keylen = OPAL_KEY_MAX;
+
+	kr = keyring_alloc(".sed_opal",
+			   GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, current_cred(),
+			   (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW |
+			   KEY_USR_READ | KEY_USR_SEARCH | KEY_USR_WRITE,
+			   KEY_ALLOC_NOT_IN_QUOTA,
+			   NULL, NULL);
+	if (IS_ERR(kr))
+		return PTR_ERR(kr);
+
+	sed_opal_keyring = kr;
+
+	if (arch_read_variable(ARCH_VAR_OPAL_KEY, OPAL_AUTH_KEY, init_sed_key,
+			       &keylen) < 0) {
+		memset(init_sed_key, '\0', sizeof(init_sed_key));
+		keylen = OPAL_KEY_MAX;
+	}
+
+	ret = update_sed_opal_key(OPAL_AUTH_KEY, init_sed_key, keylen);
+
+	return ret;
+}
+late_initcall(sed_opal_init);
diff --git a/include/linux/sed-opal.h b/include/linux/sed-opal.h
index 3a6082ff97e7..ed21e47bf773 100644
--- a/include/linux/sed-opal.h
+++ b/include/linux/sed-opal.h
@@ -24,6 +24,9 @@ bool opal_unlock_from_suspend(struct opal_dev *dev);
 struct opal_dev *init_opal_dev(void *data, sec_send_recv *send_recv);
 int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *ioctl_ptr);
 
+#define	OPAL_AUTH_KEY           "opal-boot-pin"
+#define	OPAL_AUTH_KEY_PREV      "opal-boot-pin-prev"
+
 static inline bool is_sed_ioctl(unsigned int cmd)
 {
 	switch (cmd) {
diff --git a/include/uapi/linux/sed-opal.h b/include/uapi/linux/sed-opal.h
index afbce867b906..aacaa4c8823f 100644
--- a/include/uapi/linux/sed-opal.h
+++ b/include/uapi/linux/sed-opal.h
@@ -44,10 +44,16 @@ enum opal_lock_state {
 	OPAL_LK = 0x04, /* 0100 */
 };
 
+enum opal_key_type {
+	OPAL_INCLUDED = 0,	/* key[] is the key */
+	OPAL_KEYRING,		/* key is in keyring */
+};
+
 struct opal_key {
 	__u8 lr;
 	__u8 key_len;
-	__u8 __align[6];
+	__u8 key_type;
+	__u8 __align[5];
 	__u8 key[OPAL_KEY_MAX];
 };
 
