keyfork-frame: initial commit
This commit is contained in:
parent
5d7a3c99ba
commit
ee15145662
GPG Key ID:
8E401478A3FBEF72
|
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@ -34,6 +34,18 @@ version = "1.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
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[[package]]
|
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name = "console"
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version = "0.15.7"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c926e00cc70edefdc64d3a5ff31cc65bb97a3460097762bd23afb4d8145fccf8"
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dependencies = [
|
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"encode_unicode",
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"lazy_static",
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"libc",
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"windows-sys",
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]
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[[package]]
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name = "cpufeatures"
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version = "0.2.9"
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@ -63,6 +75,12 @@ dependencies = [
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"crypto-common",
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]
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[[package]]
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name = "encode_unicode"
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||||
version = "0.3.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a357d28ed41a50f9c765dbfe56cbc04a64e53e5fc58ba79fbc34c10ef3df831f"
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[[package]]
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name = "generic-array"
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version = "0.14.7"
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@ -79,12 +97,35 @@ version = "0.4.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
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|
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[[package]]
|
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name = "insta"
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version = "1.31.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a0770b0a3d4c70567f0d58331f3088b0e4c4f56c9b8d764efe654b4a5d46de3a"
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dependencies = [
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"console",
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"lazy_static",
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"linked-hash-map",
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"similar",
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"yaml-rust",
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]
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[[package]]
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name = "itoa"
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version = "1.0.9"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "af150ab688ff2122fcef229be89cb50dd66af9e01a4ff320cc137eecc9bacc38"
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[[package]]
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name = "keyfork-frame"
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version = "0.1.0"
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dependencies = [
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"hex",
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"insta",
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"sha2",
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"thiserror",
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]
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[[package]]
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name = "keyfork-mnemonic-generate"
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version = "0.1.0"
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@ -102,12 +143,46 @@ dependencies = [
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"sha2",
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]
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[[package]]
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name = "keyforkd"
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version = "0.1.0"
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[[package]]
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name = "lazy_static"
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version = "1.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
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[[package]]
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name = "libc"
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version = "0.2.147"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b4668fb0ea861c1df094127ac5f1da3409a82116a4ba74fca2e58ef927159bb3"
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[[package]]
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name = "linked-hash-map"
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version = "0.5.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0717cef1bc8b636c6e1c1bbdefc09e6322da8a9321966e8928ef80d20f7f770f"
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[[package]]
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name = "proc-macro2"
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version = "1.0.66"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "18fb31db3f9bddb2ea821cde30a9f70117e3f119938b5ee630b7403aa6e2ead9"
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dependencies = [
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"unicode-ident",
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]
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[[package]]
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name = "quote"
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version = "1.0.33"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
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dependencies = [
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"proc-macro2",
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]
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[[package]]
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name = "ryu"
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version = "1.0.15"
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@ -142,6 +217,43 @@ dependencies = [
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"digest",
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]
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[[package]]
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name = "similar"
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version = "2.2.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "420acb44afdae038210c99e69aae24109f32f15500aa708e81d46c9f29d55fcf"
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[[package]]
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name = "syn"
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version = "2.0.29"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c324c494eba9d92503e6f1ef2e6df781e78f6a7705a0202d9801b198807d518a"
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dependencies = [
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"proc-macro2",
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"quote",
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"unicode-ident",
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]
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[[package]]
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name = "thiserror"
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version = "1.0.47"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "97a802ec30afc17eee47b2855fc72e0c4cd62be9b4efe6591edde0ec5bd68d8f"
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dependencies = [
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"thiserror-impl",
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]
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[[package]]
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name = "thiserror-impl"
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version = "1.0.47"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6bb623b56e39ab7dcd4b1b98bb6c8f8d907ed255b18de254088016b27a8ee19b"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "tinyvec"
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version = "1.6.0"
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@ -163,6 +275,12 @@ version = "1.16.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "497961ef93d974e23eb6f433eb5fe1b7930b659f06d12dec6fc44a8f554c0bba"
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[[package]]
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name = "unicode-ident"
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version = "1.0.11"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "301abaae475aa91687eb82514b328ab47a211a533026cb25fc3e519b86adfc3c"
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[[package]]
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name = "unicode-normalization"
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version = "0.1.22"
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@ -177,3 +295,78 @@ name = "version_check"
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version = "0.9.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
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[[package]]
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name = "windows-sys"
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version = "0.45.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "75283be5efb2831d37ea142365f009c02ec203cd29a3ebecbc093d52315b66d0"
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dependencies = [
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"windows-targets",
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]
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[[package]]
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name = "windows-targets"
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version = "0.42.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8e5180c00cd44c9b1c88adb3693291f1cd93605ded80c250a75d472756b4d071"
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dependencies = [
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"windows_aarch64_gnullvm",
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"windows_aarch64_msvc",
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"windows_i686_gnu",
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"windows_i686_msvc",
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"windows_x86_64_gnu",
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"windows_x86_64_gnullvm",
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"windows_x86_64_msvc",
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]
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[[package]]
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name = "windows_aarch64_gnullvm"
|
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version = "0.42.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "597a5118570b68bc08d8d59125332c54f1ba9d9adeedeef5b99b02ba2b0698f8"
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[[package]]
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name = "windows_aarch64_msvc"
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version = "0.42.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e08e8864a60f06ef0d0ff4ba04124db8b0fb3be5776a5cd47641e942e58c4d43"
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[[package]]
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name = "windows_i686_gnu"
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version = "0.42.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c61d927d8da41da96a81f029489353e68739737d3beca43145c8afec9a31a84f"
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[[package]]
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name = "windows_i686_msvc"
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version = "0.42.2"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
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[[package]]
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name = "windows_x86_64_gnu"
|
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version = "0.42.2"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
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|
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[[package]]
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name = "windows_x86_64_gnullvm"
|
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version = "0.42.2"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
|
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|
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[[package]]
|
||||
name = "windows_x86_64_msvc"
|
||||
version = "0.42.2"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
|
||||
|
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[[package]]
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name = "yaml-rust"
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version = "0.4.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "56c1936c4cc7a1c9ab21a1ebb602eb942ba868cbd44a99cb7cdc5892335e1c85"
|
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dependencies = [
|
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"linked-hash-map",
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]
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@ -2,5 +2,6 @@
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members = [
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"keyfork-mnemonic-generate",
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"keyfork-mnemonic-util"
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"keyfork-mnemonic-util",
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"keyfork-frame"
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]
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@ -0,0 +1,14 @@
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[package]
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name = "keyfork-frame"
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version = "0.1.0"
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edition = "2021"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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hex = "0.4.3"
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sha2 = "0.10.7"
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thiserror = "1.0.47"
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[dev-dependencies]
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insta = "1.31.0"
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@ -0,0 +1,157 @@
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//! Utility functions to quickly encode and decode `&[u8]` to and from framed messages.
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//!
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//! Framed messages consist of the following items:
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//!
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//! ```txt
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//! | len: u32 of data.len() | data: binary data |
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//! ```
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//!
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//! The data stored after the length consists of the following items:
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//!
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//! ```txt
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//! | checksum: [u8; 32] sha256 hash of `raw_data` | raw_data: &[u8] |
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//! ```
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use sha2::{Digest, Sha256};
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#[derive(Debug, Clone, thiserror::Error)]
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pub enum DecodeError {
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/// There were not enough bytes to determine the length of the data slice.
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#[error("Invalid length: {0}")]
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InvalidLength(std::array::TryFromSliceError),
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/// There were not enough bytes to read a checksum of the data slice.
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#[error("Invalid checksum: {0} bytes")]
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InvalidChecksum(std::array::TryFromSliceError),
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/// There were not enough bytes to read the rest of the data.
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#[error("Incorrect length of internal data: {0}, expected at least: {1}")]
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IncorrectLength(usize, u32),
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/// The provided checksum of the data did not match the locally-generated checksum.
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#[error("Checksum did not match: Their {0} != Our {1}")]
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BadChecksum(String, String),
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}
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#[derive(Debug, Clone, thiserror::Error)]
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pub enum EncodeError {
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/// The given input was larger than could be encoded by this protocol.
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#[error("Input too large to encode: {0}")]
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InputTooLarge(usize),
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}
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const LEN_SIZE: usize = std::mem::size_of::<u32>();
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fn hash(data: &[u8]) -> Vec<u8> {
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let mut hashobj = Sha256::new();
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hashobj.update(data);
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hashobj.finalize().to_vec()
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}
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/// Encode a given `&[u8]` to a framed message.
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///
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/// # Errors
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/// An error may be returned if the given `data` is more than [`u32::MAX`] bytes. This is a
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/// constraint on a protocol level.
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pub fn try_encode(data: &[u8]) -> Result<Vec<u8>, EncodeError> {
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let hash = hash(data);
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let content = hash.iter().chain(data.iter()).copied().collect::<Vec<_>>();
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let mut result = (u32::try_from(content.len())
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.map_err(|_| EncodeError::InputTooLarge(content.len()))?)
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||||
.to_be_bytes()
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.to_vec();
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result.extend(content);
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Ok(result)
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||||
}
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||||
|
||||
/// Decode a framed message into a `Vec<u8>`.
|
||||
///
|
||||
/// # Errors
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||||
/// An error may be returned if:
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||||
/// * The given `data` does not contain enough data to parse a length,
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/// * The given `data` does not contain the given length's worth of data,
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||||
/// * The given `data` has a checksum that does not match what we build locally.
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pub fn try_decode(data: &[u8]) -> Result<Vec<u8>, DecodeError> {
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||||
// check length and advance data pointer beyond length check
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||||
let len_bytes: [u8; LEN_SIZE] = data[..LEN_SIZE]
|
||||
.try_into()
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||||
.map_err(DecodeError::InvalidLength)?;
|
||||
let len = u32::from_be_bytes(len_bytes);
|
||||
if len as usize + LEN_SIZE > data.len() {
|
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return Err(DecodeError::IncorrectLength(data.len() - LEN_SIZE, len));
|
||||
}
|
||||
let data = &data[LEN_SIZE..];
|
||||
|
||||
let checksum: &[u8; 32] = &data[..32]
|
||||
.try_into()
|
||||
.map_err(DecodeError::InvalidChecksum)?;
|
||||
|
||||
let content = &data[32..];
|
||||
let our_checksum = hash(content);
|
||||
if our_checksum != checksum {
|
||||
return Err(DecodeError::BadChecksum(
|
||||
hex::encode(checksum),
|
||||
hex::encode(our_checksum),
|
||||
));
|
||||
}
|
||||
|
||||
Ok(content.to_vec())
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::{try_encode, try_decode, DecodeError};
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||||
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||||
#[test]
|
||||
fn stable_interface() {
|
||||
let data = (0..255).collect::<Vec<u8>>();
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||||
insta::assert_debug_snapshot!(try_encode(&data[..]));
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}
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||||
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#[test]
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||||
fn equivalency() -> Result<(), DecodeError> {
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let data = (0..255).collect::<Vec<u8>>();
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assert_eq!(try_decode(&try_encode(&data[..]).unwrap())?, data);
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Ok(())
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||||
}
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||||
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||||
#[test]
|
||||
fn allows_extra_data() -> Result<(), DecodeError> {
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||||
let data = (0..255).collect::<Vec<u8>>();
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||||
let mut encoded = try_encode(&data[..]).unwrap();
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||||
// Throw on some extra data
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||||
encoded.extend(0..255);
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assert_eq!(try_decode(&try_encode(&data[..]).unwrap())?, data);
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||||
Ok(())
|
||||
}
|
||||
|
||||
#[test]
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||||
fn error_on_smaller_data() {
|
||||
// Data sliced by 1 byte
|
||||
let data = (0..255).collect::<Vec<u8>>();
|
||||
let encoded = try_encode(&data[..]).unwrap();
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||||
let error = try_decode(&encoded[..data.len() - 1]);
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||||
assert!(error.is_err());
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||||
|
||||
// Data includes length and checksum
|
||||
let error = try_decode(&encoded[..super::LEN_SIZE + 256 / 8]);
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||||
assert!(error.is_err());
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||||
|
||||
// Data only includes length
|
||||
let data = 12u32.to_be_bytes();
|
||||
let error = try_decode(&data[..]);
|
||||
assert!(error.is_err());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn error_on_invalid_checksum() {
|
||||
let data = (0..255).collect::<Vec<u8>>();
|
||||
let mut encoded = try_encode(&data[..]).unwrap();
|
||||
assert_ne!(encoded[super::LEN_SIZE + 1], 0);
|
||||
encoded[super::LEN_SIZE + 1] = 0;
|
||||
|
||||
let error = try_decode(&data[..]);
|
||||
assert!(error.is_err());
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,299 @@
|
|||
---
|
||||
source: keyfork-frame/src/lib.rs
|
||||
expression: "try_encode(&data[..])"
|
||||
---
|
||||
Ok(
|
||||
[
|
||||
0,
|
||||
0,
|
||||
1,
|
||||
31,
|
||||
63,
|
||||
133,
|
||||
145,
|
||||
17,
|
||||
44,
|
||||
107,
|
||||
190,
|
||||
92,
|
||||
150,
|
||||
57,
|
||||
101,
|
||||
149,
|
||||
78,
|
||||
41,
|
||||
49,
|
||||
8,
|
||||
183,
|
||||
32,
|
||||
142,
|
||||
210,
|
||||
175,
|
||||
137,
|
||||
62,
|
||||
80,
|
||||
13,
|
||||
133,
|
||||
147,
|
||||
104,
|
||||
198,
|
||||
84,
|
||||
234,
|
||||
190,
|
||||
0,
|
||||
1,
|
||||
2,
|
||||
3,
|
||||
4,
|
||||
5,
|
||||
6,
|
||||
7,
|
||||
8,
|
||||
9,
|
||||
10,
|
||||
11,
|
||||
12,
|
||||
13,
|
||||
14,
|
||||
15,
|
||||
16,
|
||||
17,
|
||||
18,
|
||||
19,
|
||||
20,
|
||||
21,
|
||||
22,
|
||||
23,
|
||||
24,
|
||||
25,
|
||||
26,
|
||||
27,
|
||||
28,
|
||||
29,
|
||||
30,
|
||||
31,
|
||||
32,
|
||||
33,
|
||||
34,
|
||||
35,
|
||||
36,
|
||||
37,
|
||||
38,
|
||||
39,
|
||||
40,
|
||||
41,
|
||||
42,
|
||||
43,
|
||||
44,
|
||||
45,
|
||||
46,
|
||||
47,
|
||||
48,
|
||||
49,
|
||||
50,
|
||||
51,
|
||||
52,
|
||||
53,
|
||||
54,
|
||||
55,
|
||||
56,
|
||||
57,
|
||||
58,
|
||||
59,
|
||||
60,
|
||||
61,
|
||||
62,
|
||||
63,
|
||||
64,
|
||||
65,
|
||||
66,
|
||||
67,
|
||||
68,
|
||||
69,
|
||||
70,
|
||||
71,
|
||||
72,
|
||||
73,
|
||||
74,
|
||||
75,
|
||||
76,
|
||||
77,
|
||||
78,
|
||||
79,
|
||||
80,
|
||||
81,
|
||||
82,
|
||||
83,
|
||||
84,
|
||||
85,
|
||||
86,
|
||||
87,
|
||||
88,
|
||||
89,
|
||||
90,
|
||||
91,
|
||||
92,
|
||||
93,
|
||||
94,
|
||||
95,
|
||||
96,
|
||||
97,
|
||||
98,
|
||||
99,
|
||||
100,
|
||||
101,
|
||||
102,
|
||||
103,
|
||||
104,
|
||||
105,
|
||||
106,
|
||||
107,
|
||||
108,
|
||||
109,
|
||||
110,
|
||||
111,
|
||||
112,
|
||||
113,
|
||||
114,
|
||||
115,
|
||||
116,
|
||||
117,
|
||||
118,
|
||||
119,
|
||||
120,
|
||||
121,
|
||||
122,
|
||||
123,
|
||||
124,
|
||||
125,
|
||||
126,
|
||||
127,
|
||||
128,
|
||||
129,
|
||||
130,
|
||||
131,
|
||||
132,
|
||||
133,
|
||||
134,
|
||||
135,
|
||||
136,
|
||||
137,
|
||||
138,
|
||||
139,
|
||||
140,
|
||||
141,
|
||||
142,
|
||||
143,
|
||||
144,
|
||||
145,
|
||||
146,
|
||||
147,
|
||||
148,
|
||||
149,
|
||||
150,
|
||||
151,
|
||||
152,
|
||||
153,
|
||||
154,
|
||||
155,
|
||||
156,
|
||||
157,
|
||||
158,
|
||||
159,
|
||||
160,
|
||||
161,
|
||||
162,
|
||||
163,
|
||||
164,
|
||||
165,
|
||||
166,
|
||||
167,
|
||||
168,
|
||||
169,
|
||||
170,
|
||||
171,
|
||||
172,
|
||||
173,
|
||||
174,
|
||||
175,
|
||||
176,
|
||||
177,
|
||||
178,
|
||||
179,
|
||||
180,
|
||||
181,
|
||||
182,
|
||||
183,
|
||||
184,
|
||||
185,
|
||||
186,
|
||||
187,
|
||||
188,
|
||||
189,
|
||||
190,
|
||||
191,
|
||||
192,
|
||||
193,
|
||||
194,
|
||||
195,
|
||||
196,
|
||||
197,
|
||||
198,
|
||||
199,
|
||||
200,
|
||||
201,
|
||||
202,
|
||||
203,
|
||||
204,
|
||||
205,
|
||||
206,
|
||||
207,
|
||||
208,
|
||||
209,
|
||||
210,
|
||||
211,
|
||||
212,
|
||||
213,
|
||||
214,
|
||||
215,
|
||||
216,
|
||||
217,
|
||||
218,
|
||||
219,
|
||||
220,
|
||||
221,
|
||||
222,
|
||||
223,
|
||||
224,
|
||||
225,
|
||||
226,
|
||||
227,
|
||||
228,
|
||||
229,
|
||||
230,
|
||||
231,
|
||||
232,
|
||||
233,
|
||||
234,
|
||||
235,
|
||||
236,
|
||||
237,
|
||||
238,
|
||||
239,
|
||||
240,
|
||||
241,
|
||||
242,
|
||||
243,
|
||||
244,
|
||||
245,
|
||||
246,
|
||||
247,
|
||||
248,
|
||||
249,
|
||||
250,
|
||||
251,
|
||||
252,
|
||||
253,
|
||||
254,
|
||||
],
|
||||
)
|
||||
Loading…
Reference in New Issue