diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d8124f1..3e77f98 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,7 +7,7 @@ on:
       - main
 
 env:
-  RUST_VERSION: "nightly"
+  RUST_VERSION: "1.69"
 
 jobs:
   format:
diff --git a/Cargo.toml b/Cargo.toml
index f85f5f8..d08a661 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,6 +25,7 @@ android-activity = { version = "0.5.0", features = ["native-activity"] }
 jni = { version = "0.21.1", features = ["invocation"] }
 lazy_static = "1.4.0"
 ndk-context = "0.1.1"
+paste = "1.0.14"
 
 [dependencies]
 thiserror = "1.0.50"
diff --git a/examples/android/Cargo.lock b/examples/android/Cargo.lock
index ea252e1..c2949ee 100644
--- a/examples/android/Cargo.lock
+++ b/examples/android/Cargo.lock
@@ -61,12 +61,12 @@ dependencies = [
 
 [[package]]
 name = "android-activity"
-version = "0.5.0"
+version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "052ad56e336bcc615a214bffbeca6c181ee9550acec193f0327e0b103b033a4d"
+checksum = "ee91c0c2905bae44f84bfa4e044536541df26b7703fd0888deeb9060fcc44289"
 dependencies = [
  "android-properties",
- "bitflags 2.4.1",
+ "bitflags 2.4.2",
  "cc",
  "cesu8",
  "jni",
@@ -105,20 +105,6 @@ dependencies = [
 ]
 
 [[package]]
-<<<<<<< HEAD
-<<<<<<< HEAD
-<<<<<<< HEAD
-=======
-name = "autocfg"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
-
-[[package]]
->>>>>>> 318f114 (feat(ios): get keypair by id)
-=======
->>>>>>> d3d4576 (fix(ios): disable macos)
-=======
 name = "askar-crypto"
 version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -156,7 +142,6 @@ dependencies = [
 ]
 
 [[package]]
->>>>>>> ac6a119 (tests: improve and unified mobile testing)
 name = "base16ct"
 version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -182,9 +167,9 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "bitflags"
-version = "2.4.1"
+version = "2.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "327762f6e5a765692301e5bb513e0d9fef63be86bbc14528052b1cd3e6f03e07"
+checksum = "ed570934406eb16438a4e976b1b4500774099c13b8cb96eec99f620f05090ddf"
 
 [[package]]
 name = "blake2"
@@ -249,11 +234,10 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.0.83"
+version = "1.0.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1174fb0b6ec23863f8b971027804a42614e347eafb0a95bf0b12cdae21fc4d0"
+checksum = "7f9fa1897e4325be0d68d48df6aa1a71ac2ed4d27723887e7754192705350730"
 dependencies = [
- "jobserver",
  "libc",
 ]
 
@@ -316,15 +300,15 @@ dependencies = [
 
 [[package]]
 name = "const-oid"
-version = "0.9.5"
+version = "0.9.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "28c122c3980598d243d63d9a704629a2d748d101f278052ff068be5a4423ab6f"
+checksum = "c2459377285ad874054d797f3ccebf984978aa39129f6eafde5cdc8315b612f8"
 
 [[package]]
 name = "core-foundation"
-version = "0.9.3"
+version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "194a7a9e6de53fa55116934067c844d9d749312f75c6f6d0980e8c252f8c2146"
+checksum = "91e195e091a93c46f7102ec7818a2aa394e1e1771c3ab4825963fa03e45afb8f"
 dependencies = [
  "core-foundation-sys",
  "libc",
@@ -332,15 +316,15 @@ dependencies = [
 
 [[package]]
 name = "core-foundation-sys"
-version = "0.8.4"
+version = "0.8.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e496a50fda8aacccc86d7529e2c1e0892dbd0f898a6b5645b5561b89c3210efa"
+checksum = "06ea2b9bc92be3c2baa9334a323ebca2d6f074ff852cd1d7b11064035cd3868f"
 
 [[package]]
 name = "cpufeatures"
-version = "0.2.11"
+version = "0.2.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce420fe07aecd3e67c5f910618fe65e94158f6dcc0adf44e00d69ce2bdfe0fd0"
+checksum = "53fe5e26ff1b7aef8bca9c6080520cfb8d9333c7568e1829cef191a9723e5504"
 dependencies = [
  "libc",
 ]
@@ -516,9 +500,9 @@ dependencies = [
 
 [[package]]
 name = "env_logger"
-version = "0.10.1"
+version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95b3f3e67048839cb0d0781f445682a35113da7121f7c949db0e2be96a4fbece"
+checksum = "4cd405aab171cb85d6735e5c8d9db038c17d3ca007a4d2c25f337935c3d90580"
 dependencies = [
  "log",
  "regex",
@@ -559,9 +543,9 @@ dependencies = [
 
 [[package]]
 name = "getrandom"
-version = "0.2.11"
+version = "0.2.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fe9006bed769170c11f845cf00c7c1e9092aeb3f268e007c3e760ac68008070f"
+checksum = "190092ea657667030ac6a35e305e62fc4dd69fd98ac98631e5d3a2b1575a12b5"
 dependencies = [
  "cfg-if",
  "libc",
@@ -597,9 +581,9 @@ dependencies = [
 
 [[package]]
 name = "hashbrown"
-version = "0.14.2"
+version = "0.14.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f93e7192158dbcda357bdec5fb5788eebf8bbac027f3f33e719d29135ae84156"
+checksum = "290f1a1d9242c78d09ce40a5e87e7554ee637af1351968159f4952f028f75604"
 
 [[package]]
 name = "hkdf"
@@ -621,9 +605,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.1.0"
+version = "2.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d530e1a18b1cb4c484e6e34556a0d948706958449fca0cab753d649f2bce3d1f"
+checksum = "233cf39063f058ea2caae4091bf4a3ef70a653afbc026f5c4a4135d114e3c177"
 dependencies = [
  "equivalent",
  "hashbrown",
@@ -673,15 +657,6 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8eaf4bc02d17cbdd7ff4c7438cafcdf7fb9a4613313ad11b4f8fefe7d3fa0130"
 
-[[package]]
-name = "jobserver"
-version = "0.1.27"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c37f63953c4c63420ed5fd3d6d398c719489b9f872b9fa683262f8edd363c7d"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "k256"
 version = "0.13.3"
@@ -702,9 +677,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.150"
+version = "0.2.153"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89d92a4743f9a61002fae18374ed11e7973f530cb3a3255fb354818118b2203c"
+checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
 
 [[package]]
 name = "libloading"
@@ -724,9 +699,9 @@ checksum = "b5e6163cb8c49088c2c36f57875e58ccd8c87c7427f7fbd50ea6710b2f3f2e8f"
 
 [[package]]
 name = "memchr"
-version = "2.6.4"
+version = "2.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f665ee40bc4a3c5590afb1e9677db74a508659dfd71e126420da8274909a0167"
+checksum = "523dc4f511e55ab87b694dc30d0f820d60906ef06413f93d4d7a1385599cc149"
 
 [[package]]
 name = "mobile_tests"
@@ -744,12 +719,11 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2076a31b7010b17a38c01907c45b945e8f11495ee4dd588309718901b1f7a5b7"
 dependencies = [
- "bitflags 2.4.1",
+ "bitflags 2.4.2",
  "jni-sys",
  "log",
  "ndk-sys",
  "num_enum",
- "raw-window-handle",
  "thiserror",
 ]
 
@@ -769,54 +743,19 @@ dependencies = [
 ]
 
 [[package]]
-<<<<<<< HEAD
-<<<<<<< HEAD
-=======
-name = "num-bigint"
-version = "0.4.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "608e7659b5c3d7cba262d894801b9ec9d00de989e8a82bd4bef91d08da45cdc0"
-dependencies = [
- "autocfg",
- "num-integer",
- "num-traits",
-]
-
-[[package]]
-name = "num-integer"
-version = "0.1.46"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7969661fd2958a5cb096e56c8e1ad0444ac2bbcd0061bd28660485a44879858f"
-dependencies = [
- "num-traits",
-]
-
-[[package]]
-name = "num-traits"
-version = "0.2.18"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da0df0e5185db44f69b44f26786fe401b6c293d1907744beaa7fa62b2e5a517a"
-dependencies = [
- "autocfg",
-]
-
-[[package]]
->>>>>>> 318f114 (feat(ios): get keypair by id)
-=======
->>>>>>> d3d4576 (fix(ios): disable macos)
 name = "num_enum"
-version = "0.7.1"
+version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "683751d591e6d81200c39fb0d1032608b77724f34114db54f571ff1317b337c0"
+checksum = "02339744ee7253741199f897151b38e72257d13802d4ee837285cc2990a90845"
 dependencies = [
  "num_enum_derive",
 ]
 
 [[package]]
 name = "num_enum_derive"
-version = "0.7.1"
+version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c11e44798ad209ccdd91fc192f0526a369a01234f7373e1b141c96d7cee4f0e"
+checksum = "681030a937600a36906c185595136d26abfebb4aa9c65701cefcaf8578bb982b"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2",
@@ -826,9 +765,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.18.0"
+version = "1.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dd8b5dd2ae5ed71462c540258bedcb51965123ad7e7ccf4b9a8cafaa4a63576d"
+checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
 
 [[package]]
 name = "opaque-debug"
@@ -860,6 +799,12 @@ dependencies = [
  "sha2",
 ]
 
+[[package]]
+name = "paste"
+version = "1.0.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "de3145af08024dea9fa9914f381a17b8fc6034dfb00f3a84013f7ff43f29ed4c"
+
 [[package]]
 name = "pem-rfc7468"
 version = "0.7.0"
@@ -925,27 +870,27 @@ dependencies = [
 
 [[package]]
 name = "proc-macro-crate"
-version = "2.0.0"
+version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7e8366a6159044a37876a2b9817124296703c586a5c92e2c53751fa06d8d43e8"
+checksum = "6d37c51ca738a55da99dc0c4a34860fd675453b8b36209178c2249bb13651284"
 dependencies = [
  "toml_edit",
 ]
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.69"
+version = "1.0.78"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "134c189feb4956b20f6f547d2cf727d4c0fe06722b20a0eec87ed445a97f92da"
+checksum = "e2422ad645d89c99f8f3e6b88a9fdeca7fabeac836b1002371c4367c8f984aae"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.33"
+version = "1.0.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
+checksum = "291ec9ab5efd934aaf503a6466c5d5251535d108ee747472c3977cc5acc868ef"
 dependencies = [
  "proc-macro2",
 ]
@@ -980,17 +925,11 @@ dependencies = [
  "getrandom",
 ]
 
-[[package]]
-name = "raw-window-handle"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "42a9830a0e1b9fb145ebb365b8bc4ccd75f290f98c0247deafbbe2c75cefb544"
-
 [[package]]
 name = "regex"
-version = "1.10.2"
+version = "1.10.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "380b951a9c5e80ddfd6136919eef32310721aa4aacd4889a8d39124b026ab343"
+checksum = "b62dbe01f0b06f9d8dc7d49e05a0785f153b00b2c227856282f671e0318c9b15"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -1000,9 +939,9 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.4.3"
+version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f804c7828047e88b2d32e2d7fe5a105da8ee3264f01902f796c8e067dc2483f"
+checksum = "5bb987efffd3c6d0d8f5f89510bb458559eab11e4f869acb20bf845e016259cd"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -1036,9 +975,9 @@ dependencies = [
 
 [[package]]
 name = "ryu"
-version = "1.0.16"
+version = "1.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f98d2aa92eebf49b69786be48e4477826b256916e84a57ff2a4f21923b48eb4c"
+checksum = "e86697c916019a8588c99b5fac3cead74ec0b4b819707a682fd4d23fa0ce1ba1"
 
 [[package]]
 name = "salsa20"
@@ -1081,6 +1020,7 @@ dependencies = [
  "lazy_static",
  "ndk-context",
  "p256",
+ "paste",
  "security-framework",
  "thiserror",
 ]
@@ -1088,54 +1028,21 @@ dependencies = [
 [[package]]
 name = "security-framework"
 version = "2.9.2"
-<<<<<<< HEAD
-<<<<<<< HEAD
-<<<<<<< HEAD
-source = "git+https://github.com/berendsliedrecht/rust-security-framework?branch=main#53e05311f7ff7a7cfae4ff38f7f22452407684fc"
-=======
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05b64fb303737d99b81884b2c63433e9ae28abebe5eb5045dcdd175dc2ecf4de"
->>>>>>> 318f114 (feat(ios): get keypair by id)
-=======
-source = "git+https://github.com/berendsliedrecht/rust-security-framework?branch=main#53e05311f7ff7a7cfae4ff38f7f22452407684fc"
->>>>>>> d3d4576 (fix(ios): disable macos)
-=======
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "05b64fb303737d99b81884b2c63433e9ae28abebe5eb5045dcdd175dc2ecf4de"
->>>>>>> ac6a119 (tests: improve and unified mobile testing)
 dependencies = [
  "bitflags 1.3.2",
  "core-foundation",
  "core-foundation-sys",
  "libc",
-<<<<<<< HEAD
-<<<<<<< HEAD
-=======
- "num-bigint",
->>>>>>> 318f114 (feat(ios): get keypair by id)
-=======
->>>>>>> d3d4576 (fix(ios): disable macos)
  "security-framework-sys",
 ]
 
 [[package]]
 name = "security-framework-sys"
 version = "2.9.1"
-<<<<<<< HEAD
-<<<<<<< HEAD
-<<<<<<< HEAD
-source = "git+https://github.com/berendsliedrecht/rust-security-framework?branch=main#53e05311f7ff7a7cfae4ff38f7f22452407684fc"
-=======
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e932934257d3b408ed8f30db49d85ea163bfe74961f017f405b025af298f0c7a"
->>>>>>> 318f114 (feat(ios): get keypair by id)
-=======
-source = "git+https://github.com/berendsliedrecht/rust-security-framework?branch=main#53e05311f7ff7a7cfae4ff38f7f22452407684fc"
->>>>>>> d3d4576 (fix(ios): disable macos)
-=======
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e932934257d3b408ed8f30db49d85ea163bfe74961f017f405b025af298f0c7a"
->>>>>>> ac6a119 (tests: improve and unified mobile testing)
 dependencies = [
  "core-foundation-sys",
  "libc",
@@ -1143,15 +1050,15 @@ dependencies = [
 
 [[package]]
 name = "semver"
-version = "1.0.21"
+version = "1.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b97ed7a9823b74f99c7742f5336af7be5ecd3eeafcb1507d1fa93347b1d589b0"
+checksum = "92d43fe69e652f3df9bdc2b85b2854a0825b86e4fb76bc44d945137d053639ca"
 
 [[package]]
 name = "serde"
-version = "1.0.193"
+version = "1.0.197"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "25dd9975e68d0cb5aa1120c288333fc98731bd1dd12f561e468ea4728c042b89"
+checksum = "3fb1c873e1b9b056a4dc4c0c198b24c3ffa059243875552b2bd0933b1aee4ce2"
 dependencies = [
  "serde_derive",
 ]
@@ -1168,9 +1075,9 @@ dependencies = [
 
 [[package]]
 name = "serde_derive"
-version = "1.0.193"
+version = "1.0.197"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43576ca501357b9b071ac53cdc7da8ef0cbd9493d8df094cd821777ea6e894d3"
+checksum = "7eb0b34b42edc17f6b7cac84a52a1c5f0e1bb2227e997ca9011ea3dd34e8610b"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1200,9 +1107,9 @@ dependencies = [
 
 [[package]]
 name = "spki"
-version = "0.7.2"
+version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9d1e996ef02c474957d681f1b05213dfb0abab947b446a62d37770b23500184a"
+checksum = "d91ed6c858b01f942cd56b37a94b3e0a1798290327d1236e4d9cf4eaca44d29d"
 dependencies = [
  "base64ct",
  "der",
@@ -1216,9 +1123,9 @@ checksum = "81cdd64d312baedb58e21336b31bc043b77e01cc99033ce76ef539f78e965ebc"
 
 [[package]]
 name = "syn"
-version = "2.0.39"
+version = "2.0.50"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23e78b90f2fcf45d3e842032ce32e3f2d1545ba6636271dcbf24fa306d87be7a"
+checksum = "74f1bdc9872430ce9b75da68329d1c1746faf50ffac5f19e02b71e37ff881ffb"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1227,18 +1134,18 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.50"
+version = "1.0.57"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f9a7210f5c9a7156bb50aa36aed4c95afb51df0df00713949448cf9e97d382d2"
+checksum = "1e45bcbe8ed29775f228095caf2cd67af7a4ccf756ebff23a306bf3e8b47b24b"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.50"
+version = "1.0.57"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "266b2e40bc00e5a6c09c3584011e08b06f123c00362c92b975ba9843aaaa14b8"
+checksum = "a953cb265bef375dae3de6663da4d3804eee9682ea80d8e2542529b73c531c81"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1253,9 +1160,9 @@ checksum = "3550f4e9685620ac18a50ed434eb3aec30db8ba93b0287467bca5826ea25baf1"
 
 [[package]]
 name = "toml_edit"
-version = "0.20.7"
+version = "0.21.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "70f427fce4d84c72b5b732388bf4a9f4531b53f74e2887e3ecb2481f68f66d81"
+checksum = "6a8534fd7f78b5405e860340ad6575217ce99f38d4d5c8f2442cb5ecb50090e1"
 dependencies = [
  "indexmap",
  "toml_datetime",
@@ -1415,9 +1322,9 @@ checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
 
 [[package]]
 name = "winnow"
-version = "0.5.19"
+version = "0.5.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "829846f3e3db426d4cee4510841b71a8e58aa2a76b1132579487ae430ccd9c7b"
+checksum = "f593a95398737aeed53e489c785df13f3618e41dbcd6718c6addbf1395aa6876"
 dependencies = [
  "memchr",
 ]
diff --git a/src/android.rs b/src/android.rs
index 435c92c..444e6bc 100644
--- a/src/android.rs
+++ b/src/android.rs
@@ -4,6 +4,7 @@ use crate::{
     KeyOps, SecureEnvironmentOps,
 };
 use jni::objects::{JByteArray, JObject, JValue};
+use paste::paste;
 
 lazy_static::lazy_static! {
     pub static ref JAVA_VM: jni::JavaVM =
@@ -44,7 +45,8 @@ macro_rules! jni_handle_error {
 
 macro_rules! jni_call_method {
     ($env:expr, $cls:expr, $method:ident, $args:expr, $ret_typ:ident, $err:ident) => {
-        $env.call_method($cls, $method, concat_idents!($method, _SIG), $args)
+        paste! {
+        $env.call_method($cls, $method, [<$method _SIG>], $args)
             .map_err(|e| $crate::error::SecureEnvError::$err(Some(e.to_string())))
             .and_then(|v| {
                 jni_handle_error!($env, $err);
@@ -52,6 +54,7 @@ macro_rules! jni_call_method {
                 v.$ret_typ()
                     .map_err(|e| $crate::error::SecureEnvError::$err(Some(e.to_string())))
             })
+        }
     };
 
     ($env:expr, $cls:expr, $method:ident, $ret_typ:ident, $err:ident) => {
@@ -60,12 +63,13 @@ macro_rules! jni_call_method {
 }
 
 macro_rules! jni_call_static_method {
-    ($env:expr, $cls:ident, $method:ident, $args:expr, $ret_typ:ident, $err:ident) => {{
+    ($env:expr, $cls:ident, $method:ident, $args:expr, $ret_typ:ident, $err:ident) => {
+        paste! {{
         let res = $env
             .call_static_method(
-                concat_idents!($cls, _CLS),
+                [<$cls _CLS>],
                 $method,
-                concat_idents!($method, _SIG),
+                [<$method _SIG>],
                 $args,
             )
             .map_err(|e| $crate::error::SecureEnvError::$err(Some(e.to_string())))
@@ -79,7 +83,8 @@ macro_rules! jni_call_static_method {
         jni_handle_error!($env, $err);
 
         res
-    }};
+        }}
+    };
 
     ($env:expr, $cls:ident, $method:ident, $ret_typ:ident, $err:ident) => {
         jni_call_static_method!($env, $cls, $method, &[], $ret_typ, $err)
@@ -87,9 +92,10 @@ macro_rules! jni_call_static_method {
 }
 
 macro_rules! jni_get_static_field {
-    ($env:expr, $cls:expr, $method:ident, $ret_typ:ident, $err:ident) => {{
+    ($env:expr, $cls:expr, $method:ident, $ret_typ:ident, $err:ident) => {
+        paste! {{
         let field = $env
-            .get_static_field($cls, $method, concat_idents!($method, _SIG))
+            .get_static_field($cls, $method, [<$method _SIG>])
             .map_err(|e| $crate::error::SecureEnvError::$err(Some(e.to_string())))
             .and_then(|v| {
                 jni_handle_error!($env, $err);
@@ -101,15 +107,17 @@ macro_rules! jni_get_static_field {
         jni_handle_error!($env, $err);
 
         field
-    }};
+        }}
+    };
 }
 
 macro_rules! jni_new_object {
-    ($env:expr, $cls:ident, $args:expr, $err:ident) => {{
+    ($env:expr, $cls:ident, $args:expr, $err:ident) => {
+        paste! {{
         let obj = $env
             .new_object(
-                concat_idents!($cls, _CLS),
-                concat_idents!($cls, _CTOR_SIG),
+                [<$cls _CLS>],
+                [<$cls _CTOR_SIG>],
                 $args,
             )
             .map_err(|e| $crate::error::SecureEnvError::$err(Some(e.to_string())));
@@ -117,19 +125,22 @@ macro_rules! jni_new_object {
         jni_handle_error!($env, $err);
 
         obj
-    }};
+        }}
+    };
 }
 
 macro_rules! jni_find_class {
-    ($env:expr, $cls:ident, $err:ident) => {{
+    ($env:expr, $cls:ident, $err:ident) => {
+        paste! {{
         let cls = $env
-            .find_class(concat_idents!($cls, _CLS))
+            .find_class([<$cls _CLS>])
             .map_err(|e| $crate::error::SecureEnvError::$err(Some(e.to_string())));
 
         jni_handle_error!($env, $err);
 
         cls
-    }};
+        }}
+    };
 }
 
 #[derive(Debug)]
@@ -142,7 +153,7 @@ impl SecureEnvironmentOps<Key> for SecureEnvironment {
             .map_err(SecureEnvError::UnableToAttachJVMToThread)?;
 
         let ctx = ndk_context::android_context().context() as jni::sys::jobject;
-        if ctx.is_null() || !ctx.is_aligned() {
+        if ctx.is_null() {
             return Err(SecureEnvError::UnableToGenerateKey(Some(
                 "Could not acquire context. Null, or unaligned pointer, was found".to_owned(),
             )));
diff --git a/src/lib.rs b/src/lib.rs
index 2461ff2..0baa913 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,5 +1,3 @@
-#![feature(concat_idents, pointer_is_aligned)]
-
 #[cfg(not(any(target_os = "android", target_os = "ios")))]
 compile_error!("Only Android and iOS are supported targets");