diff --git a/backport/backport-include/crypto/skcipher.h b/backport/backport-include/crypto/skcipher.h
deleted file mode 100644
index 73ba7830..00000000
--- a/backport/backport-include/crypto/skcipher.h
+++ /dev/null
@@ -1,454 +0,0 @@
-#ifndef _BACKPORT_CRYPTO_SKCIPHER_H
-#define _BACKPORT_CRYPTO_SKCIPHER_H
-#include_next <crypto/skcipher.h>
-#include <linux/version.h>
-
-#if LINUX_VERSION_IS_LESS(4,3,0)
-/**
- *	struct skcipher_request - Symmetric key cipher request
- *	@cryptlen: Number of bytes to encrypt or decrypt
- *	@iv: Initialisation Vector
- *	@src: Source SG list
- *	@dst: Destination SG list
- *	@base: Underlying async request request
- *	@__ctx: Start of private context data
- */
-#define skcipher_request LINUX_BACKPORT(skcipher_request)
-struct skcipher_request {
-	unsigned int cryptlen;
-
-	u8 *iv;
-
-	struct scatterlist *src;
-	struct scatterlist *dst;
-
-	struct crypto_async_request base;
-
-	void *__ctx[] CRYPTO_MINALIGN_ATTR;
-};
-
-#define crypto_skcipher LINUX_BACKPORT(crypto_skcipher)
-struct crypto_skcipher {
-	int (*setkey)(struct crypto_skcipher *tfm, const u8 *key,
-	              unsigned int keylen);
-	int (*encrypt)(struct skcipher_request *req);
-	int (*decrypt)(struct skcipher_request *req);
-
-	unsigned int ivsize;
-	unsigned int reqsize;
-	unsigned int keysize;
-
-	struct crypto_tfm base;
-};
-
-#ifndef SKCIPHER_REQUEST_ON_STACK
-#define SKCIPHER_REQUEST_ON_STACK(name, tfm) \
-	char __##name##_desc[sizeof(struct skcipher_request) + \
-		crypto_skcipher_reqsize(tfm)] CRYPTO_MINALIGN_ATTR; \
-	struct skcipher_request *name = (void *)__##name##_desc
-#endif
-
-/**
- * DOC: Symmetric Key Cipher API
- *
- * Symmetric key cipher API is used with the ciphers of type
- * CRYPTO_ALG_TYPE_SKCIPHER (listed as type "skcipher" in /proc/crypto).
- *
- * Asynchronous cipher operations imply that the function invocation for a
- * cipher request returns immediately before the completion of the operation.
- * The cipher request is scheduled as a separate kernel thread and therefore
- * load-balanced on the different CPUs via the process scheduler. To allow
- * the kernel crypto API to inform the caller about the completion of a cipher
- * request, the caller must provide a callback function. That function is
- * invoked with the cipher handle when the request completes.
- *
- * To support the asynchronous operation, additional information than just the
- * cipher handle must be supplied to the kernel crypto API. That additional
- * information is given by filling in the skcipher_request data structure.
- *
- * For the symmetric key cipher API, the state is maintained with the tfm
- * cipher handle. A single tfm can be used across multiple calls and in
- * parallel. For asynchronous block cipher calls, context data supplied and
- * only used by the caller can be referenced the request data structure in
- * addition to the IV used for the cipher request. The maintenance of such
- * state information would be important for a crypto driver implementer to
- * have, because when calling the callback function upon completion of the
- * cipher operation, that callback function may need some information about
- * which operation just finished if it invoked multiple in parallel. This
- * state information is unused by the kernel crypto API.
- */
-
-#define __crypto_skcipher_cast LINUX_BACKPORT(__crypto_skcipher_cast)
-static inline struct crypto_skcipher *__crypto_skcipher_cast(
-	struct crypto_tfm *tfm)
-{
-	return container_of(tfm, struct crypto_skcipher, base);
-}
-
-/**
- * crypto_alloc_skcipher() - allocate symmetric key cipher handle
- * @alg_name: is the cra_name / name or cra_driver_name / driver name of the
- *	      skcipher cipher
- * @type: specifies the type of the cipher
- * @mask: specifies the mask for the cipher
- *
- * Allocate a cipher handle for an skcipher. The returned struct
- * crypto_skcipher is the cipher handle that is required for any subsequent
- * API invocation for that skcipher.
- *
- * Return: allocated cipher handle in case of success; IS_ERR() is true in case
- *	   of an error, PTR_ERR() returns the error code.
- */
-#define crypto_alloc_skcipher LINUX_BACKPORT(crypto_alloc_skcipher)
-struct crypto_skcipher *crypto_alloc_skcipher(const char *alg_name,
-					      u32 type, u32 mask);
-
-#define crypto_skcipher_tfm LINUX_BACKPORT(crypto_skcipher_tfm)
-static inline struct crypto_tfm *crypto_skcipher_tfm(
-	struct crypto_skcipher *tfm)
-{
-	return &tfm->base;
-}
-
-/**
- * crypto_free_skcipher() - zeroize and free cipher handle
- * @tfm: cipher handle to be freed
- */
-#define crypto_free_skcipher LINUX_BACKPORT(crypto_free_skcipher)
-static inline void crypto_free_skcipher(struct crypto_skcipher *tfm)
-{
-	crypto_destroy_tfm(tfm, crypto_skcipher_tfm(tfm));
-}
-
-/**
- * crypto_has_skcipher() - Search for the availability of an skcipher.
- * @alg_name: is the cra_name / name or cra_driver_name / driver name of the
- *	      skcipher
- * @type: specifies the type of the cipher
- * @mask: specifies the mask for the cipher
- *
- * Return: true when the skcipher is known to the kernel crypto API; false
- *	   otherwise
- */
-#define crypto_has_skcipher LINUX_BACKPORT(crypto_has_skcipher)
-static inline int crypto_has_skcipher(const char *alg_name, u32 type,
-					u32 mask)
-{
-	return crypto_has_alg(alg_name, crypto_skcipher_type(type),
-			      crypto_skcipher_mask(mask));
-}
-
-#define crypto_skcipher_driver_name LINUX_BACKPORT(crypto_skcipher_driver_name)
-static inline const char *crypto_skcipher_driver_name(
-	struct crypto_skcipher *tfm)
-{
-	return crypto_tfm_alg_driver_name(crypto_skcipher_tfm(tfm));
-}
-
-/**
- * crypto_skcipher_ivsize() - obtain IV size
- * @tfm: cipher handle
- *
- * The size of the IV for the skcipher referenced by the cipher handle is
- * returned. This IV size may be zero if the cipher does not need an IV.
- *
- * Return: IV size in bytes
- */
-#define crypto_skcipher_ivsize LINUX_BACKPORT(crypto_skcipher_ivsize)
-static inline unsigned int crypto_skcipher_ivsize(struct crypto_skcipher *tfm)
-{
-	return tfm->ivsize;
-}
-
-/**
- * crypto_skcipher_blocksize() - obtain block size of cipher
- * @tfm: cipher handle
- *
- * The block size for the skcipher referenced with the cipher handle is
- * returned. The caller may use that information to allocate appropriate
- * memory for the data returned by the encryption or decryption operation
- *
- * Return: block size of cipher
- */
-#define crypto_skcipher_blocksize LINUX_BACKPORT(crypto_skcipher_blocksize)
-static inline unsigned int crypto_skcipher_blocksize(
-	struct crypto_skcipher *tfm)
-{
-	return crypto_tfm_alg_blocksize(crypto_skcipher_tfm(tfm));
-}
-
-#define crypto_skcipher_alignmask LINUX_BACKPORT(crypto_skcipher_alignmask)
-static inline unsigned int crypto_skcipher_alignmask(
-	struct crypto_skcipher *tfm)
-{
-	return crypto_tfm_alg_alignmask(crypto_skcipher_tfm(tfm));
-}
-
-#define crypto_skcipher_get_flags LINUX_BACKPORT(crypto_skcipher_get_flags)
-static inline u32 crypto_skcipher_get_flags(struct crypto_skcipher *tfm)
-{
-	return crypto_tfm_get_flags(crypto_skcipher_tfm(tfm));
-}
-
-#define crypto_skcipher_set_flags LINUX_BACKPORT(crypto_skcipher_set_flags)
-static inline void crypto_skcipher_set_flags(struct crypto_skcipher *tfm,
-					       u32 flags)
-{
-	crypto_tfm_set_flags(crypto_skcipher_tfm(tfm), flags);
-}
-
-#define crypto_skcipher_clear_flags LINUX_BACKPORT(crypto_skcipher_clear_flags)
-static inline void crypto_skcipher_clear_flags(struct crypto_skcipher *tfm,
-						 u32 flags)
-{
-	crypto_tfm_clear_flags(crypto_skcipher_tfm(tfm), flags);
-}
-
-/**
- * crypto_skcipher_setkey() - set key for cipher
- * @tfm: cipher handle
- * @key: buffer holding the key
- * @keylen: length of the key in bytes
- *
- * The caller provided key is set for the skcipher referenced by the cipher
- * handle.
- *
- * Note, the key length determines the cipher type. Many block ciphers implement
- * different cipher modes depending on the key size, such as AES-128 vs AES-192
- * vs. AES-256. When providing a 16 byte key for an AES cipher handle, AES-128
- * is performed.
- *
- * Return: 0 if the setting of the key was successful; < 0 if an error occurred
- */
-#define crypto_skcipher_setkey LINUX_BACKPORT(crypto_skcipher_setkey)
-static inline int crypto_skcipher_setkey(struct crypto_skcipher *tfm,
-					 const u8 *key, unsigned int keylen)
-{
-	return tfm->setkey(tfm, key, keylen);
-}
-
-#define crypto_skcipher_has_setkey LINUX_BACKPORT(crypto_skcipher_has_setkey)
-static inline bool crypto_skcipher_has_setkey(struct crypto_skcipher *tfm)
-{
-	return tfm->keysize;
-}
-
-#define crypto_skcipher_default_keysize LINUX_BACKPORT(crypto_skcipher_default_keysize)
-static inline unsigned int crypto_skcipher_default_keysize(
-	struct crypto_skcipher *tfm)
-{
-	return tfm->keysize;
-}
-
-/**
- * crypto_skcipher_reqtfm() - obtain cipher handle from request
- * @req: skcipher_request out of which the cipher handle is to be obtained
- *
- * Return the crypto_skcipher handle when furnishing an skcipher_request
- * data structure.
- *
- * Return: crypto_skcipher handle
- */
-#define crypto_skcipher_reqtfm LINUX_BACKPORT(crypto_skcipher_reqtfm)
-static inline struct crypto_skcipher *crypto_skcipher_reqtfm(
-	struct skcipher_request *req)
-{
-	return __crypto_skcipher_cast(req->base.tfm);
-}
-
-/**
- * crypto_skcipher_encrypt() - encrypt plaintext
- * @req: reference to the skcipher_request handle that holds all information
- *	 needed to perform the cipher operation
- *
- * Encrypt plaintext data using the skcipher_request handle. That data
- * structure and how it is filled with data is discussed with the
- * skcipher_request_* functions.
- *
- * Return: 0 if the cipher operation was successful; < 0 if an error occurred
- */
-#define crypto_skcipher_encrypt LINUX_BACKPORT(crypto_skcipher_encrypt)
-static inline int crypto_skcipher_encrypt(struct skcipher_request *req)
-{
-	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
-
-	return tfm->encrypt(req);
-}
-
-/**
- * crypto_skcipher_decrypt() - decrypt ciphertext
- * @req: reference to the skcipher_request handle that holds all information
- *	 needed to perform the cipher operation
- *
- * Decrypt ciphertext data using the skcipher_request handle. That data
- * structure and how it is filled with data is discussed with the
- * skcipher_request_* functions.
- *
- * Return: 0 if the cipher operation was successful; < 0 if an error occurred
- */
-#define crypto_skcipher_decrypt LINUX_BACKPORT(crypto_skcipher_decrypt)
-static inline int crypto_skcipher_decrypt(struct skcipher_request *req)
-{
-	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
-
-	return tfm->decrypt(req);
-}
-
-/**
- * DOC: Symmetric Key Cipher Request Handle
- *
- * The skcipher_request data structure contains all pointers to data
- * required for the symmetric key cipher operation. This includes the cipher
- * handle (which can be used by multiple skcipher_request instances), pointer
- * to plaintext and ciphertext, asynchronous callback function, etc. It acts
- * as a handle to the skcipher_request_* API calls in a similar way as
- * skcipher handle to the crypto_skcipher_* API calls.
- */
-
-/**
- * crypto_skcipher_reqsize() - obtain size of the request data structure
- * @tfm: cipher handle
- *
- * Return: number of bytes
- */
-#define crypto_skcipher_reqsize LINUX_BACKPORT(crypto_skcipher_reqsize)
-static inline unsigned int crypto_skcipher_reqsize(struct crypto_skcipher *tfm)
-{
-	return tfm->reqsize;
-}
-
-/**
- * skcipher_request_set_tfm() - update cipher handle reference in request
- * @req: request handle to be modified
- * @tfm: cipher handle that shall be added to the request handle
- *
- * Allow the caller to replace the existing skcipher handle in the request
- * data structure with a different one.
- */
-#define skcipher_request_set_tfm LINUX_BACKPORT(skcipher_request_set_tfm)
-static inline void skcipher_request_set_tfm(struct skcipher_request *req,
-					    struct crypto_skcipher *tfm)
-{
-	req->base.tfm = crypto_skcipher_tfm(tfm);
-}
-
-#define skcipher_request_cast LINUX_BACKPORT(skcipher_request_cast)
-static inline struct skcipher_request *skcipher_request_cast(
-	struct crypto_async_request *req)
-{
-	return container_of(req, struct skcipher_request, base);
-}
-
-/**
- * skcipher_request_alloc() - allocate request data structure
- * @tfm: cipher handle to be registered with the request
- * @gfp: memory allocation flag that is handed to kmalloc by the API call.
- *
- * Allocate the request data structure that must be used with the skcipher
- * encrypt and decrypt API calls. During the allocation, the provided skcipher
- * handle is registered in the request data structure.
- *
- * Return: allocated request handle in case of success; IS_ERR() is true in case
- *	   of an error, PTR_ERR() returns the error code.
- */
-#define skcipher_request LINUX_BACKPORT(skcipher_request)
-static inline struct skcipher_request *skcipher_request_alloc(
-	struct crypto_skcipher *tfm, gfp_t gfp)
-{
-	struct skcipher_request *req;
-
-	req = kmalloc(sizeof(struct skcipher_request) +
-		      crypto_skcipher_reqsize(tfm), gfp);
-
-	if (likely(req))
-		skcipher_request_set_tfm(req, tfm);
-
-	return req;
-}
-
-/**
- * skcipher_request_free() - zeroize and free request data structure
- * @req: request data structure cipher handle to be freed
- */
-#define skcipher_request_free LINUX_BACKPORT(skcipher_request_free)
-static inline void skcipher_request_free(struct skcipher_request *req)
-{
-	kzfree(req);
-}
-
-/**
- * skcipher_request_set_callback() - set asynchronous callback function
- * @req: request handle
- * @flags: specify zero or an ORing of the flags
- *         CRYPTO_TFM_REQ_MAY_BACKLOG the request queue may back log and
- *	   increase the wait queue beyond the initial maximum size;
- *	   CRYPTO_TFM_REQ_MAY_SLEEP the request processing may sleep
- * @compl: callback function pointer to be registered with the request handle
- * @data: The data pointer refers to memory that is not used by the kernel
- *	  crypto API, but provided to the callback function for it to use. Here,
- *	  the caller can provide a reference to memory the callback function can
- *	  operate on. As the callback function is invoked asynchronously to the
- *	  related functionality, it may need to access data structures of the
- *	  related functionality which can be referenced using this pointer. The
- *	  callback function can access the memory via the "data" field in the
- *	  crypto_async_request data structure provided to the callback function.
- *
- * This function allows setting the callback function that is triggered once the
- * cipher operation completes.
- *
- * The callback function is registered with the skcipher_request handle and
- * must comply with the following template
- *
- *	void callback_function(struct crypto_async_request *req, int error)
- */
-#define skcipher_request_set_callback LINUX_BACKPORT(skcipher_request_set_callback)
-static inline void skcipher_request_set_callback(struct skcipher_request *req,
-						 u32 flags,
-						 crypto_completion_t compl,
-						 void *data)
-{
-	req->base.complete = compl;
-	req->base.data = data;
-	req->base.flags = flags;
-}
-
-/**
- * skcipher_request_set_crypt() - set data buffers
- * @req: request handle
- * @src: source scatter / gather list
- * @dst: destination scatter / gather list
- * @cryptlen: number of bytes to process from @src
- * @iv: IV for the cipher operation which must comply with the IV size defined
- *      by crypto_skcipher_ivsize
- *
- * This function allows setting of the source data and destination data
- * scatter / gather lists.
- *
- * For encryption, the source is treated as the plaintext and the
- * destination is the ciphertext. For a decryption operation, the use is
- * reversed - the source is the ciphertext and the destination is the plaintext.
- */
-#define skcipher_request_set_crypt LINUX_BACKPORT(skcipher_request_set_crypt)
-static inline void skcipher_request_set_crypt(
-	struct skcipher_request *req,
-	struct scatterlist *src, struct scatterlist *dst,
-	unsigned int cryptlen, void *iv)
-{
-	req->src = src;
-	req->dst = dst;
-	req->cryptlen = cryptlen;
-	req->iv = iv;
-}
-#endif /* < 4.3 */
-
-#if LINUX_VERSION_IS_LESS(4,6,0)
-#define skcipher_request_zero LINUX_BACKPORT(skcipher_request_zero)
-static inline void skcipher_request_zero(struct skcipher_request *req)
-{
-	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
-
-	memzero_explicit(req, sizeof(*req) + crypto_skcipher_reqsize(tfm));
-}
-#endif /* < 4.6 */
-
-#endif /* _BACKPORT_CRYPTO_SKCIPHER_H */
diff --git a/backport/compat/Kconfig b/backport/compat/Kconfig
index f88a646e..bb5d864c 100644
--- a/backport/compat/Kconfig
+++ b/backport/compat/Kconfig
@@ -102,14 +102,6 @@ config BPAUTO_USERSEL_BUILD_ALL
 	  It's only really useful for compat testing, so
 	  you probably shouldn't enable it.
 
-config BPAUTO_CRYPTO_SKCIPHER
-	tristate
-	depends on KERNEL_4_3
-	default y if BACKPORTED_LIB80211_CRYPT_WEP
-	default y if BACKPORTED_LIB80211_CRYPT_TKIP
-	#c-file crypto/skcipher.c
-	#module-name skcipher
-
 config BPAUTO_WANT_DEV_COREDUMP
 	bool
 
diff --git a/backport/compat/Makefile b/backport/compat/Makefile
index fdc68c8b..99b52faa 100644
--- a/backport/compat/Makefile
+++ b/backport/compat/Makefile
@@ -41,8 +41,6 @@ compat-$(CPTCFG_KERNEL_4_20) += backport-4.20.o
 
 compat-$(CPTCFG_KERNEL_4_20) += backport-genetlink.o
 
-compat-$(CPTCFG_BPAUTO_CRYPTO_SKCIPHER) += crypto-skcipher.o
-
 compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/verify.o
 compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/pkcs7.asn1.o
 compat-$(CPTCFG_BPAUTO_BUILD_SYSTEM_DATA_VERIFICATION) += verification/pkcs7_verify.o
diff --git a/patches/crypto-skcipher.patch b/patches/crypto-skcipher.patch
deleted file mode 100644
index 99eedb24..00000000
--- a/patches/crypto-skcipher.patch
+++ /dev/null
@@ -1,32 +0,0 @@
---- a/compat/crypto-skcipher.c
-+++ b/compat/crypto-skcipher.c
-@@ -26,7 +26,28 @@
- #include <linux/seq_file.h>
- #include <net/netlink.h>
- 
--#include "internal.h"
-+struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
-+				      u32 mask);
-+
-+void *crypto_alloc_tfm(const char *alg_name,
-+		       const struct crypto_type *frontend, u32 type, u32 mask);
-+
-+struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
-+
-+static inline void *crypto_skcipher_ctx(struct crypto_skcipher *tfm)
-+{
-+	return crypto_tfm_ctx(&tfm->base);
-+}
-+
-+static inline void *skcipher_request_ctx(struct skcipher_request *req)
-+{
-+	return req->__ctx;
-+}
-+
-+static inline u32 skcipher_request_flags(struct skcipher_request *req)
-+{
-+	return req->base.flags;
-+}
- 
- enum {
- 	SKCIPHER_WALK_PHYS = 1 << 0,
