Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
7	122	cryptography.hazmat.backends.openssl.ciphers._CipherContext.finalize	call site: {node_id}	cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert
6	55	cryptography.hazmat.backends.openssl.ciphers._CipherContext.__init__	call site: {node_id}	.isinstance
5	79	cryptography.hazmat.backends.openssl.ciphers._CipherContext.__init__	call site: {node_id}	cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert
2	1	...fuzz_sym.TestInput	call site: {node_id}	cryptography.fernet.Fernet.generate_key
2	32	cryptography.hazmat.primitives.padding._byte_padding_pad	call site: {node_id}	.bytes
2	51	cryptography.hazmat.backends.openssl.ciphers._CipherContext.__init__	call site: {node_id}	cryptography.hazmat.backends.openssl.backend.Backend.openssl_version_text
2	75	cryptography.hazmat.bindings.openssl.binding._errors_with_text	call site: {node_id}	typing.NamedTuple.__init__
2	89	cryptography.hazmat.primitives.ciphers.base.Cipher._wrap_ctx	call site: {node_id}	cryptography.hazmat.primitives.ciphers.base._AEADCipherContext.__init__
2	99	cryptography.fernet.Fernet._encrypt_from_parts	call site: {node_id}	cryptography.hazmat.primitives.ciphers.base._AEADCipherContext._check_limit
2	163	cryptography.fernet.Fernet._get_unverified_token_data	call site: {node_id}	time.time
2	182	cryptography.hazmat.primitives.ciphers.base.Cipher.decryptor	call site: {node_id}	cryptography.hazmat.primitives.ciphers.algorithms.AES.__init__
2	220	cryptography.hazmat.backends.openssl.backend.Backend.derive_pbkdf2_hmac	call site: {node_id}	.len

Fuzzer calltree


         ...fuzz_sym.TestInput

[function] [call site] 00000


           atheris.FuzzedDataProvider

[function] [call site] 00001


           fdp.ConsumeBytes

[function] [call site] 00002


           cryptography.fernet.Fernet.generate_key

[function] [call site] 00003


             os.urandom

[function] [call site] 00004


             base64.urlsafe_b64encode

[function] [call site] 00005


           cryptography.fernet.Fernet.__init__

[function] [call site] 00006


             base64.urlsafe_b64decode

[function] [call site] 00007


             
              .len

[function] [call site] 00008


           cryptography.fernet.Fernet.encrypt

[function] [call site] 00009


             time.time

[function] [call site] 00010


             
              .int

[function] [call site] 00011


             cryptography.fernet.Fernet.encrypt_at_time

[function] [call site] 00012


               os.urandom

[function] [call site] 00013


               cryptography.fernet.Fernet._encrypt_from_parts

[function] [call site] 00014


                 cryptography.utils._check_bytes

[function] [call site] 00015


                   
                    .isinstance

[function] [call site] 00016


                 cryptography.hazmat.primitives.padding.PKCS7.__init__

[function] [call site] 00017


                   cryptography.hazmat.primitives.padding._byte_padding_check

[function] [call site] 00018


                 cryptography.hazmat.primitives.padding.PKCS7.padder

[function] [call site] 00019


                   cryptography.hazmat.primitives.padding._PKCS7PaddingContext.__init__

[function] [call site] 00020


                 cryptography.hazmat.primitives.padding._PKCS7PaddingContext.update

[function] [call site] 00021


                   cryptography.hazmat.primitives.padding._byte_padding_update

[function] [call site] 00022


                     cryptography.utils._check_byteslike

[function] [call site] 00023


                       
                        .memoryview

[function] [call site] 00024


                     
                      .bytes

[function] [call site] 00025


                     
                      .len

[function] [call site] 00026


                 cryptography.hazmat.primitives.padding._PKCS7PaddingContext.finalize

[function] [call site] 00027


                   cryptography.hazmat.primitives.padding._byte_padding_pad

[function] [call site] 00028


                     
                      .len

[function] [call site] 00029


                     cryptography.hazmat.primitives.padding._PKCS7PaddingContext._padding

[function] [call site] 00030


                       
                        .bytes

[function] [call site] 00031


                     cryptography.hazmat.primitives.padding._ANSIX923PaddingContext._padding

[function] [call site] 00032


                       
                        .bytes

[function] [call site] 00033


                       
                        .bytes

[function] [call site] 00034


                 cryptography.hazmat.primitives.ciphers.base.Cipher.__init__

[function] [call site] 00035


                   
                    .isinstance

[function] [call site] 00036


                   
                    .isinstance

[function] [call site] 00037


                   cryptography.hazmat.primitives.ciphers.modes._check_aes_key_length

[function] [call site] 00038


                   cryptography.hazmat.primitives.ciphers.modes._check_iv_and_key_length

[function] [call site] 00039


                     
                      .isinstance

[function] [call site] 00040


                     cryptography.hazmat.primitives.ciphers.modes._check_aes_key_length

[function] [call site] 00041


                     cryptography.hazmat.primitives.ciphers.modes._check_iv_length

[function] [call site] 00042


                       
                        .len

[function] [call site] 00043


                 cryptography.hazmat.primitives.ciphers.base.Cipher.encryptor

[function] [call site] 00044


                   
                    .isinstance

[function] [call site] 00045


                   cryptography.hazmat.backends.openssl.backend.Backend.create_symmetric_encryption_ctx

[function] [call site] 00046


                     cryptography.hazmat.backends.openssl.ciphers._CipherContext.__init__

[function] [call site] 00047


                       
                        .isinstance

[function] [call site] 00048


                       cryptography.hazmat.bindings._openssl.ffi.gc

[function] [call site] 00049


                       
                        .type

[function] [call site] 00050


                       
                        .type

[function] [call site] 00051


                       cryptography.hazmat.backends.openssl.backend.Backend.openssl_version_text

[function] [call site] 00052


                         cryptography.hazmat.bindings._openssl.ffi.string

[function] [call site] 00053


                       
                        .isinstance

[function] [call site] 00054


                       cryptography.hazmat.bindings._openssl.ffi.from_buffer

[function] [call site] 00055


                       
                        .isinstance

[function] [call site] 00056


                       cryptography.hazmat.bindings._openssl.ffi.from_buffer

[function] [call site] 00057


                       
                        .isinstance

[function] [call site] 00058


                       cryptography.hazmat.bindings._openssl.ffi.from_buffer

[function] [call site] 00059


                       
                        .isinstance

[function] [call site] 00060


                       cryptography.hazmat.bindings._openssl.ffi.from_buffer

[function] [call site] 00061


                       cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert

[function] [call site] 00062


                         cryptography.hazmat.bindings.openssl.binding._openssl_assert

[function] [call site] 00063


                           cryptography.hazmat.bindings.openssl.binding._consume_errors

[function] [call site] 00064


                             lib.ERR_get_error

[function] [call site] 00065


                             lib.ERR_GET_LIB

[function] [call site] 00066


                             lib.ERR_GET_REASON

[function] [call site] 00067


                             cryptography.hazmat.bindings.openssl.binding._OpenSSLError.__init__

[function] [call site] 00068


                             errors.append

[function] [call site] 00069


                           cryptography.hazmat.bindings.openssl.binding._errors_with_text

[function] [call site] 00070


                             cryptography.hazmat.bindings._openssl.ffi.new

[function] [call site] 00071


                             
                              .len

[function] [call site] 00072


                             cryptography.hazmat.bindings._openssl.lib.ERR_error_string_n

[function] [call site] 00073


                             cryptography.hazmat.bindings._openssl.ffi.string

[function] [call site] 00074


                             errors_with_text.append

[function] [call site] 00075


                             typing.NamedTuple.__init__

[function] [call site] 00076


                       
                        .len

[function] [call site] 00077


                       cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert

[function] [call site] 00078


                       
                        .isinstance

[function] [call site] 00079


                       
                        .len

[function] [call site] 00080


                       cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert

[function] [call site] 00081


                       
                        .len

[function] [call site] 00082


                       cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert

[function] [call site] 00083


                       cryptography.hazmat.bindings._openssl.ffi.from_buffer

[function] [call site] 00084


                       cryptography.hazmat.backends.openssl.backend.Backend._consume_errors

[function] [call site] 00085


                         cryptography.hazmat.bindings.openssl.binding._consume_errors

[function] [call site] 00086


                       cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert

[function] [call site] 00087


                   cryptography.hazmat.primitives.ciphers.base.Cipher._wrap_ctx

[function] [call site] 00088


                     
                      .isinstance

[function] [call site] 00089


                     cryptography.hazmat.primitives.ciphers.base._AEADCipherContext.__init__

[function] [call site] 00090


                     cryptography.hazmat.primitives.ciphers.base._AEADCipherContext.__init__

[function] [call site] 00091


                     cryptography.hazmat.primitives.ciphers.base._CipherContext.__init__

[function] [call site] 00092


                 cryptography.hazmat.primitives.ciphers.algorithms.AES.__init__

[function] [call site] 00093


                   cryptography.hazmat.primitives.ciphers.algorithms._verify_key_size

[function] [call site] 00094


                     cryptography.utils._check_byteslike

[function] [call site] 00095


                     
                      .len

[function] [call site] 00096


                 cryptography.hazmat.primitives.ciphers.modes.CBC.__init__

[function] [call site] 00097


                   cryptography.utils._check_byteslike

[function] [call site] 00098


                 cryptography.hazmat.primitives.ciphers.base._AEADCipherContext.update

[function] [call site] 00099


                   
                    .len

[function] [call site] 00100


                   cryptography.hazmat.primitives.ciphers.base._AEADCipherContext._check_limit

[function] [call site] 00101


                 cryptography.hazmat.primitives.ciphers.base._CipherContext.update

[function] [call site] 00102


                   cryptography.hazmat.backends.openssl.ciphers._CipherContext.update

[function] [call site] 00103


                     
                      .len

[function] [call site] 00104


                     
                      .bytearray

[function] [call site] 00105


                     cryptography.hazmat.backends.openssl.ciphers._CipherContext.update_into

[function] [call site] 00106


                       
                        .len

[function] [call site] 00107


                       
                        .len

[function] [call site] 00108


                       cryptography.hazmat.bindings._openssl.ffi.new

[function] [call site] 00109


                       cryptography.hazmat.bindings._openssl.ffi.from_buffer

[function] [call site] 00110


                       cryptography.hazmat.bindings._openssl.ffi.from_buffer

[function] [call site] 00111


                       
                        .min

[function] [call site] 00112


                       
                        .isinstance

[function] [call site] 00113


                       cryptography.hazmat.backends.openssl.backend.Backend._consume_errors

[function] [call site] 00114


                       cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert

[function] [call site] 00115


                     
                      .bytes

[function] [call site] 00116


                 cryptography.hazmat.primitives.ciphers.base._AEADCipherContext.finalize

[function] [call site] 00117


                 cryptography.hazmat.primitives.ciphers.base._CipherContext.finalize

[function] [call site] 00118


                   cryptography.hazmat.backends.openssl.ciphers._CipherContext.finalize

[function] [call site] 00119


                     
                      .isinstance

[function] [call site] 00120


                     cryptography.hazmat.bindings._openssl.ffi.new

[function] [call site] 00121


                     cryptography.hazmat.bindings._openssl.ffi.new

[function] [call site] 00122


                     cryptography.hazmat.backends.openssl.backend.Backend._consume_errors

[function] [call site] 00123


                     
                      .isinstance

[function] [call site] 00124


                     cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert

[function] [call site] 00125


                     
                      .isinstance

[function] [call site] 00126


                     cryptography.hazmat.bindings._openssl.ffi.new

[function] [call site] 00127


                     cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert

[function] [call site] 00128


                     cryptography.hazmat.bindings._openssl.ffi.buffer

[function] [call site] 00129


                     cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert

[function] [call site] 00130


                     cryptography.hazmat.bindings._openssl.ffi.buffer

[function] [call site] 00131


                 current_time.to_bytes

[function] [call site] 00132


                 cryptography.hazmat.primitives.hmac.HMAC.__init__

[function] [call site] 00133


                   
                    .isinstance

[function] [call site] 00134


                   cryptography.hazmat.backends.openssl.backend.Backend.create_hmac_ctx

[function] [call site] 00135


                     cryptography.hazmat.backends.openssl.hmac._HMACContext.__init__

[function] [call site] 00136


                       cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert

[function] [call site] 00137


                       cryptography.hazmat.bindings._openssl.ffi.gc

[function] [call site] 00138


                       cryptography.hazmat.backends.openssl.backend.Backend._evp_md_from_algorithm

[function] [call site] 00139


                         algorithm.name.encode

[function] [call site] 00140


                       cryptography.hazmat.bindings._openssl.ffi.from_buffer

[function] [call site] 00141


                       
                        .len

[function] [call site] 00142


                       cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert

[function] [call site] 00143


                 cryptography.hazmat.primitives.hmac.HMAC.update

[function] [call site] 00144


                   cryptography.utils._check_byteslike

[function] [call site] 00145


                   cryptography.hazmat.backends.openssl.hmac._HMACContext.update

[function] [call site] 00146


                     cryptography.hazmat.bindings._openssl.ffi.from_buffer

[function] [call site] 00147


                     
                      .len

[function] [call site] 00148


                     cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert

[function] [call site] 00149


                 cryptography.hazmat.primitives.hmac.HMAC.finalize

[function] [call site] 00150


                   cryptography.hazmat.backends.openssl.hmac._HMACContext.finalize

[function] [call site] 00151


                     cryptography.hazmat.bindings._openssl.ffi.new

[function] [call site] 00152


                     cryptography.hazmat.bindings._openssl.ffi.new

[function] [call site] 00153


                     cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert

[function] [call site] 00154


                     cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert

[function] [call site] 00155


                     cryptography.hazmat.bindings._openssl.ffi.buffer

[function] [call site] 00156


                 base64.urlsafe_b64encode

[function] [call site] 00157


           cryptography.fernet.Fernet.decrypt

[function] [call site] 00158


             cryptography.fernet.Fernet._get_unverified_token_data

[function] [call site] 00159


               
                .isinstance

[function] [call site] 00160


               base64.urlsafe_b64decode

[function] [call site] 00161


               
                .len

[function] [call site] 00162


               int.from_bytes

[function] [call site] 00163


             time.time

[function] [call site] 00164


             
              .int

[function] [call site] 00165


             cryptography.fernet.Fernet._decrypt_data

[function] [call site] 00166


               cryptography.fernet.Fernet._verify_signature

[function] [call site] 00167


                 cryptography.hazmat.primitives.hmac.HMAC.__init__

[function] [call site] 00168


                 cryptography.hazmat.primitives.hmac.HMAC.update

[function] [call site] 00169


                 cryptography.hazmat.primitives.hmac.HMAC.verify

[function] [call site] 00170


                   cryptography.utils._check_bytes

[function] [call site] 00171


                   cryptography.hazmat.backends.openssl.hmac._HMACContext.verify

[function] [call site] 00172


                     cryptography.hazmat.backends.openssl.hmac._HMACContext.finalize

[function] [call site] 00173


                     cryptography.hazmat.primitives.constant_time.bytes_eq

[function] [call site] 00174


                       
                        .isinstance

[function] [call site] 00175


                       
                        .isinstance

[function] [call site] 00176


                       hmac.compare_digest

[function] [call site] 00177


               cryptography.hazmat.primitives.ciphers.base.Cipher.__init__

[function] [call site] 00178


               cryptography.hazmat.primitives.ciphers.base.Cipher.decryptor

[function] [call site] 00179


                 cryptography.hazmat.backends.openssl.backend.Backend.create_symmetric_decryption_ctx

[function] [call site] 00180


                   cryptography.hazmat.backends.openssl.ciphers._CipherContext.__init__

[function] [call site] 00181


                 cryptography.hazmat.primitives.ciphers.base.Cipher._wrap_ctx

[function] [call site] 00182


               cryptography.hazmat.primitives.ciphers.algorithms.AES.__init__

[function] [call site] 00183


               cryptography.hazmat.primitives.ciphers.modes.CBC.__init__

[function] [call site] 00184


               cryptography.hazmat.primitives.ciphers.base._AEADCipherContext.update

[function] [call site] 00185


               cryptography.hazmat.primitives.ciphers.base._CipherContext.update

[function] [call site] 00186


               cryptography.hazmat.primitives.ciphers.base._AEADCipherContext.finalize

[function] [call site] 00187


               cryptography.hazmat.primitives.ciphers.base._CipherContext.finalize

[function] [call site] 00188


               cryptography.hazmat.primitives.padding.PKCS7.__init__

[function] [call site] 00189


               cryptography.hazmat.primitives.padding.PKCS7.unpadder

[function] [call site] 00190


                 cryptography.hazmat.primitives.padding._PKCS7UnpaddingContext.__init__

[function] [call site] 00191


               cryptography.hazmat.primitives.padding._PKCS7UnpaddingContext.update

[function] [call site] 00192


                 cryptography.hazmat.primitives.padding._byte_unpadding_update

[function] [call site] 00193


                   cryptography.utils._check_byteslike

[function] [call site] 00194


                   
                    .bytes

[function] [call site] 00195


                   
                    .len

[function] [call site] 00196


                   
                    .max

[function] [call site] 00197


               cryptography.hazmat.primitives.padding._PKCS7UnpaddingContext.finalize

[function] [call site] 00198


                 cryptography.hazmat.primitives.padding._byte_unpadding_check

[function] [call site] 00199


                   
                    .len

[function] [call site] 00200


                   cryptography.hazmat.bindings._rust.check_pkcs7_padding

[function] [call site] 00201


                   cryptography.hazmat.bindings._rust.check_ansix923_padding

[function] [call site] 00202


           fdp.ConsumeBytes

[function] [call site] 00203


           fdp.ConsumeBytes

[function] [call site] 00204


           cryptography.hazmat.primitives.kdf.pbkdf2.PBKDF2HMAC.__init__

[function] [call site] 00205


             cryptography.hazmat.backends.openssl.backend.Backend.pbkdf2_hmac_supported

[function] [call site] 00206


               cryptography.hazmat.backends.openssl.backend.Backend.hmac_supported

[function] [call site] 00207


                 
                  .isinstance

[function] [call site] 00208


                 cryptography.hazmat.backends.openssl.backend.Backend.hash_supported

[function] [call site] 00209


                   
                    .isinstance

[function] [call site] 00210


                   cryptography.hazmat.backends.openssl.backend.Backend._evp_md_from_algorithm

[function] [call site] 00211


             cryptography.utils._check_bytes

[function] [call site] 00212


           cryptography.hazmat.primitives.kdf.pbkdf2.PBKDF2HMAC.derive

[function] [call site] 00213


             cryptography.utils._check_byteslike

[function] [call site] 00214


             cryptography.hazmat.backends.openssl.backend.Backend.derive_pbkdf2_hmac

[function] [call site] 00215


               cryptography.hazmat.bindings._openssl.ffi.new

[function] [call site] 00216


               cryptography.hazmat.backends.openssl.backend.Backend._evp_md_non_null_from_algorithm

[function] [call site] 00217


                 cryptography.hazmat.backends.openssl.backend.Backend._evp_md_from_algorithm

[function] [call site] 00218


                 cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert

[function] [call site] 00219


               cryptography.hazmat.bindings._openssl.ffi.from_buffer

[function] [call site] 00220


               
                .len

[function] [call site] 00221


               
                .len

[function] [call site] 00222


               cryptography.hazmat.backends.openssl.backend.Backend.openssl_assert

[function] [call site] 00223


               cryptography.hazmat.bindings._openssl.ffi.buffer

[function] [call site] 00224


           base64.urlsafe_b64encode

[function] [call site] 00225


           cryptography.fernet.Fernet.__init__

[function] [call site] 00226


           cryptography.fernet.Fernet.encrypt

[function] [call site] 00227


           cryptography.fernet.Fernet.decrypt

[function] [call site] 00228